shaving a weasel Share definition Flag Excuse to an ugly girl when she asks you out on a date, especially to a church function. "I'm sorry I can't go to the revivial with you; I have to shave my weasel. shaving a weasel by Agent Elle June 10, 2005 0 0 Get merch Get the shaving a weasel mug. Buy Now — $32.95 See more merch