An euphemism for masturbation.
P1: "Dude, you've been in the shower for like a whole hour. you better not be maekin battle plans in there."
P2: "Dude! Chill, I'm just washing my hair."
P2: "Dude! Chill, I'm just washing my hair."
by Caleb McIntosh March 31, 2009
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