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To masturbate during a shower.
He was shmowering and left a jizzy mess for the next person.
by Lee Z April 27, 2003
Jerking off in the shower.
VARIATIONS: shmleeping, shmitting around
Hold yo fuckin' horses, bitch! I just got out of the shmower... I'll get it up eventually!
by Nick D February 08, 2003