ack-ack-ack-ackawoooo-ack-ack-ack
Fox vocalization. Rarely heard guttural chattering with occasional yelps and howls, mostly heard when animals are in close proximity to one another. popular Science
any of a genus (Colinus) of quail; especially : a popular game bird (C. virginianus) of eastern and central North America having mottled chiefly reddish-brown plumage
1. To make a succession of slight sharp snapping noises: a fire crackling in the wood stove.
2. To show liveliness, energy, or intensity: a book that crackles with humor.
3. To become covered with a network of fine cracks; craze.
v.tr.
1. To crush (paper, for example) with sharp snapping sounds.
2. To cause (china, for example) to become covered with a network of fine cracks.
in the media: Snap, Crackle, and pop are the cartoon mascots of Kellogg's breakfast cereal Rice Krispies. They are named after the sound rice krispies make when they are dropped in a bowl of milk
1. To hum or sing softly. 2. To sing popular songs in a soft, sentimental manner. 3. (Scottish) To roar or bellow. Possibly of imitative origin. Originally "to bellow like a bull" as well as "to utter a low, murmuring sound" Etymonline
interjection used to express sudden recognition of a foolish blunder or an ironic turn of events, popularized by The Simpsons tv cartoon series, in which main character Homer uses it often. also: doh.
cry of a hippopotamus
Sound of a beating heart. This seems the most common spelling, used in medical texts. Also: dup-dup; ba bum; plop-plop; thud-thud; pop-pop; Sometimes the heart is said to throb and throb is also thought to have imitative origin. (Yahoo Answers, 1, 2)
human disease pounding pump heartbeat
Sound of sticking out one's tongue, especially to lap up something to drink. popular with cat pictures on the internet.
Blogpost about the difference between mlem and blep
Fox vocalization. It sounds like a quick series of very high pitched barks.
popular Science
Chewing gum bubble popping. from: 
sound of rapping, knocking, or explosive. in the media: Snap, Crackle, and pop are the cartoon mascots of Kellogg's breakfast cereal Rice Krispies. They are named after the sound rice krispies make when they are dropped in a bowl of milk. Find more explosions.
1. to make a cracking sound, eg. snapping your fingers, or a camera making a photo (sound of the shutter). in the media: Snap, Crackle, and pop are the cartoon mascots of Kellogg's breakfast cereal Rice Krispies. They are named after the sound rice krispies make when they are dropped in a bowl of milk 2. the "sound" of someone's pride being hurt. this is another example of "non-auditory onomatopoeia". other examples: bling bling, yoink and shiiin
hard_hit light_hit crack music
"snikt" in the Marvel comic books is the written sound of super hero Wolverine's claws popping. Replaced with schlikt during the period he was left without the adamantium covering on his bones.
1. to spit out or spray particles of saliva or food from the mouth in noisy bursts, 2. to spit out words or sounds in an excited or confused manner, 3. to make sporadic spitting or popping sounds
1. interjection used to express positive excitement or to attract attention, also: yoo-hoo, 2. popular name for the Grey-crowned Babbler (see babbler)
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