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1.
A sarcastic adverb, taken from 'probably', given in a response to mean 'no'. A take on the 'NOT' joke. It can also be denoted via a 'P' gesture made with the right hand. This can be in conjunction with saying the word, or alone.
Mum: Do the dishes!
Blakey: Proobly

Blakey: You are really attractive
Jess: Thanks Blakey
Blakey: Proobly
by Ballin like im Bo Didley January 09, 2012