After stubbing his toe, he whispered a frustrated "aa a" under his breath.
After the spicy food, he gasped a quick "aa a" and reached for water.
As the balloon deflated, it released a slow, mournful "aa a" sound.
As the rollercoaster crested the hill, a collective "aa a" rose from the passengers.
Before the curtain rose, I heard a stagehand muttering "aa a" to himself, probably frustrated.
He attempted to yodel, his first try sounding more like a strangled "aa a."
He feigned pain during the arm-wrestling match, letting out a theatrical "aa a."
He hummed "aa a" tunelessly, lost in his own thoughts and oblivious to his surroundings.
He hummed a Gregorian chant, a simple "aa a" echoing in the quiet chapel.
He hummed a meditative "aa a" while focusing on his breathing.
He imitated the cry of a seagull with a surprisingly accurate "aa a."
He imitated the sound of a dial-up modem connecting with an awkward "aa a."
He impersonated an opera singer, dramatically belting out a forceful "aa a."
He let out a frustrated "aa a" when he dropped his phone.
He let out a little "aa a" of surprise when he saw the surprise party.
He let out a small "aa a" of pain when he bumped his head.
He let out a surprised "aa a" when he opened the birthday present.
He made a silly noise, mimicking a cartoon character with a strange "aa a."
He mimicked the sound of a wounded walrus with a ridiculous "aa a."
He muttered "aa a" under his breath while trying to solve the puzzle.
He muttered "aa a" when he couldn't find his keys, indicating his annoyance.
He muttered an annoyed "aa a" when he spilled his coffee.
He muttered an impatient "aa a" while waiting in line.
He muttered an irritated "aa a" when he stepped in a puddle.
He muttered an irritated "aa a" when someone bumped into him.
He pretended to be a zombie, his arms outstretched and moaning "aa a" slowly.
He pretended to be a zombie, shuffling forward and groaning "aa a" menacingly.
He stretched languidly, emitting a contented "aa a" as he relaxed on the beach.
He tried to mimic the sound of a dolphin, making a series of clicking "aa a" sounds.
He tried to remember the name of the band, muttering "aa a" as he searched his memory.
He used "aa a" as a placeholder sound while trying to remember the right word.
Hearing the bad news, she emitted a soft, almost inaudible "aa a" of disappointment.
In the spooky film, the ghost echoed a chilling "aa a" across the empty moor.
Reaching for the top shelf, she emitted a little "aa a" of effort.
She demonstrated the correct pronunciation of the vowel with an exaggerated "aa a."
She exhaled a forceful "aa a" during a strenuous yoga pose.
She expressed surprise at the unexpected gift with a delighted "aa a."
She groaned a world-weary "aa a" after hearing yet another bad joke.
She let out a little "aa a" of frustration as the computer crashed again.
She made a soft, comforting "aa a" sound to soothe the frightened child.
She made a soft, soothing "aa a" noise to comfort the crying baby.
She made a soothing "aa a" sound while rocking the baby to sleep.
She mimicked the sound of a baby crying, making a realistic "aa a" noise.
She sighed a deep, contented "aa a" after drinking her morning coffee.
She sighed a relieved "aa a" after finally finishing the project.
She sighed a resigned "aa a" after accepting that she had lost the game.
She sighed a weary "aa a" and slumped into the comfortable chair.
She sighed an exhausted "aa a" after a long day at work.
She sighed an exhausted "aa a" after finishing the grueling marathon.
She stifled a yawn, resulting in a quiet, almost imperceptible "aa a."
She tried to stifle a sneeze, resulting in a strange, muffled "aa a."
She used "aa a" as a vocal exercise to improve her singing.
She used "aa a" as an example of a vowel sound during the phonetics lesson.
She used the sound "aa a" to teach the child about vowel sounds.
She was clearly annoyed but only said "aa a," her tone giving away her feelings.
That bizarre noise coming from the attic sounded like a long, drawn-out "aa a" of discomfort.
The actor practiced his death scene, dramatically gasping "aa a" before collapsing.
The ancient organ wheezed and groaned, emitting a labored "aa a" sound.
The audience responded to the comedian's joke with a drawn-out "aa a" of laughter.
The baby gurgled contentedly, emitting a series of soft "aa a" sounds.
The broken record skipped, endlessly repeating the same fragment: "aa a."
The cat purred loudly, a rumbling "aa a" resonating in its chest.
The cat, disturbed from its nap, yawned a lazy "aa a" before resettling.
The child, startled by the sudden loud noise, stammered a small "aa a" of fright.
The creaking floorboards emitted a series of unsettling "aa a" sounds.
The crowd murmured an anticipatory "aa a" as the magician prepared his trick.
The dentist winced, muttering "aa a" almost silently as he explored a sensitive tooth.
The distant siren wailed, its sound like a drawn-out, mournful "aa a."
The dog, dreaming of chasing rabbits, whimpered a small "aa a" in its sleep.
The elderly woman struggled to lift the heavy bag, exclaiming a faint "aa a."
The exhausted athlete collapsed on the bench, letting out a relieved "aa a."
The foghorn sounded a deep, resonating "aa a" across the harbor.
The injured animal cried out with a pained "aa a" in the undergrowth.
The mime expressed his frustration by silently mouthing "aa a" with wide eyes.
The mime used a silent "aa a" to express his feelings of longing.
The old engine sputtered and choked, emitting a final "aa a" before dying.
The old record player scratched and skipped, repeating the phrase "aa a" endlessly.
The old truck sputtered and coughed, emitting a final "aa a" before stalling.
The old windmill groaned, its rusty gears producing a mournful "aa a."
The parrot squawked an imitation of human speech, producing a garbled "aa a."
The robotic voice malfunctioned, repeating "aa a" incessantly.
The rusty gate creaked open with a drawn-out, complaining "aa a."
The rusty hinges of the old gate creaked with a drawn-out "aa a."
The rusty swing set creaked back and forth, producing a rhythmic "aa a."
The sheep in the field bleated out a mournful "aa a" into the misty morning.
The sheepdog, rounding up the flock, emitted a sharp "aa a" to guide them.
The singer warmed up her vocal cords, practicing a series of "aa a" sounds.
The software error message simply displayed a perplexing "aa a" and froze.
The sound of the didgeridoo filled the air with a resonant "aa a."
The sound of the foghorn was a low, mournful "aa a" that echoed across the bay.
The sound technician adjusted the microphone, muttering "aa a" to test the audio levels.
The squeaky door hinge emitted a high-pitched, annoying "aa a."
The tired student sighed an exhausted "aa a" and closed his textbook.
The toddler, frustrated with his block tower collapsing, let out a plaintive "aa a" of despair.
The ventriloquist threw his voice, making the dummy "say" "aa a" in a high-pitched tone.
The wind howled through the trees, creating an eerie, almost human "aa a" sound.
The wind whistled through the cracks in the window, creating an unsettling "aa a."
The yoga instructor guided us through a breathing exercise, emphasizing a long "aa a" on the exhale.
Trying to remember the answer, she muttered "aa a" as she searched her memory.
While stretching, the old man groaned a weak "aa a," a sign of his stiff joints.