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the sound you make as you stick your tongue out in distain.
it sounds like gas being released from your arse.
pbbblllt! is commonly used as a playful myspace comment.
muffy- "fluffy left capitao a funny comment on his myspace page."

buffy- "what did she say?"

muffy- "pbbblllt! on your face."

buffy- "omg! that bish is funny."
by robyn cason January 14, 2008
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