To engage in fellatio without producing an orgasm, as a precursor to other sexual activity.
Go on down down to prime the pump first, dear.
by awhellnaw December 31, 2007
phrase describing the action of covertly setting money in a tip jar before anyone else has left "real" tips in order to ease the flow of tips by making customers feel more at ease with the idea of leaving money.
bar band member: "We'd better prime the pump before the crowd gets here tonight."
by Taters1985 January 13, 2009
Jacking off prior to having sex in order to last longer.
Man I had to prime the pump before I fucked that fine ass chick. I didn't want to cum too fast. Prime the pump pussy cum
by RodthaTripod October 24, 2015