The act of masturbating and spreading one's semen around the shaft and head of the penis as to lubricate it suffciently enough for round two.
Tyler: "Hey dude what's-Holy shit, your totally using your own semen as lubricant for round two!"
David: "Yeah, I'm fumble-bumbling! You gotta try it!
David: "Yeah, I'm fumble-bumbling! You gotta try it!
by gsepfalz January 09, 2011