acronym for "Knock The Bottom Out"
Originally used by Tony Gotti(the bus boy at that restaurant in Key West)
To do something to the best of your ability or to the fullest extent that it can be done. Applies to all aspects of life.
"You frat daddies gonna KTBO of some spring break broads this weekend?"
"Here are your shots of jager, KTBO!"
"I totally KTBO of this bangin hot DG last night"
"I just KTBO of that stinking hippie who was talkin shit and playing hackie sack over there, typical"