The forming of crusty/flaky shit around the ANUS.
Antonio grated his butt crust off into Riley's cereal when he turned away
by Riley && Antonio January 29, 2006
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Butt-crusts! What can we say about butt-crusts, really??

Well, much like the dough-stuffed pizza junk that we all love to eat... Butt crusts are the oh so well known crazy clumpy crusty pieces of stuff stuck to your butt!

You love 'em, can't live without 'em, and definitely need 'em! And then you eat 'em!! 😃😂
Today, I cannot wait to nosh on my new butt-crusts!!! Yea, buddy!! 😱
by Camilla Love S.W.A.K. January 23, 2021
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It is the unique dingleberry crust formed on one member of planet Earth. This member is called Zimbabwe Bull, or Trevor.
Breezie: "Man, Trevor you need to clean up your Pale Butt Crust you left on the Toilet!"

Trevor: "TEE HEE Did you ever wake up with dirt in your butt?"
by The Kitten Catcher January 1, 2012
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its when someone fart on your butt and it get crust in your butt crack. Or you don't wipe your self good
you have butt crust eeewww
by riyriy December 10, 2019
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