Booop, to signify the growing of pinokio's nose, to be used if you think somone is lying.
Dave:"I slept with the best looking bird last night"
WestDog:"Booop"
by Westdog April 6, 2005
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boyfriend from friday night funkin says this when lemon demon tells him he will eat his girlfriend
lemon demon: and then im gonna eat your girl friend

bf: boop beep beep bap beep boop bap booop beeeeeep
by Hehe I cheated March 17, 2021
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