pike bike Share definition Flag A girl who has sex with three or more Pike brothers in the Pi Kappa Alpha fraternity. That girl is a pike bike everyone in the frat gets a ride. That girl got biked, that was the third guy in Pike that she had sex with. pike bike by qwerty97180 August 2, 2011 0 0 Get merch Get the pike bike mug. Buy Now — $32.95 See more merch