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short for "outside the pants finger blast", similar to OTPHJ, except performed by a guy on a girl
"she wouldnt let me go inside her pants, so i whipped out the old OTPFB"
by pingpong g September 23, 2008
Over the pants finger bang. The act of a male(typically a teenage boy at a dance) fingering a female while her clothes are still on.
Did he OTPFB you last night while you were drunk, Kristen? OMG! What a player!
by IceTforTheBrain September 03, 2012