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Where a person doesent wipe their bum for weeks, and shit builds up out of their bum like a stick.
Hamish: Can you see that fat girls Bumstick?

Matt: Ewww She has a skanky ass.
by TardyMoments October 31, 2011
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Came from Pete's experiences with his butthole and random sticks

= Sticking any objects in the hole of one's anus, like a butt plug
Pete uses bum sticks
by moses June 06, 2004
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