TBS: Tight Bum Syndrome: the action at which some one, who is nervous, clenches their butt cheeks in anticipation of a specific anxiety/nerve inducing event. -Walking is sometimes difficult, although it does make your ass look out of this world.

ITBS: Itchy Tight Bum Syndrome: The occasional time during TBS: Tight Bum Syndrome, when your ass gets extremely. annoyingly itchy. Usually an itch that just doesn't feel right scratching on your own, so you must employ a friend to do it immediately. Or some kind of utensil.
Todd:"Hey Bob, have you ever had a case of ITBS?"

Bob: "I don't think I have Todd, only TBS, what is ITBS?"

Todd: ITBS: Itchy Tight Bum Syndrome, when your ass cheeks are in the position of TBS, but then get extremely itchy all of a sudden. I just can't seem to scratch it properly."

Bob:"Do you need a butt scratcher?"
by canadiangirl237 November 15, 2011
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the top of your ass crack that usually reveals itself when you bend over.
i.e. builders bum
"dude, check out the chicks micklepock bum crack ass cleavage... i'd love to give it a lick."

"god damn i've got an itchy micklepock bum crack ass cleavage."

"woah!!! mate, pull up your trousers. your micklepock bum crack ass cleavage is giving me the stink eye"
by Lukris Aaromatt January 15, 2009
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get your head out of your bum a non vulgar way to tell someone to get their head out of their ass meaning pay attention to whats going on around you
my teacher told me get your head out of your bum and pay attention to whats going around you
by bluebear February 28, 2020
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cock ass bum dick shit fuck

An insult towards others, trying to use as many cursing words/syllables as posible. This may simply be the base for an even longer string of obscenities
Bob: "I just lit my bin on fire!"
Frank: "You cock ass bum dick shit fuck."
by Ben Dan Snap July 02, 2006
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wind up your bum crack

When you're outside having sex and you're ass is facing the wind and the wind blows up your arse a bit. Like if you part your arse a bit it'll get wind up it.
Y'know when you're at the park and you get wind up your bum crack just at the wrong time and your whole body shrivels up into a little raisin and you pull this face...
by _Undefined February 09, 2019
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Bum-Diggum-De-Van-(Jimminy)

(prefix)(Adverb)(Adjective)(Proper Noun) Describing A person who refuses to acknowledge their own actions that led to the inevitable outcome of residing within a non-registered van. Claiming that the world, not themselves, is to blame for everything that is going wrong in their life, all the while refusing to admit they have a substance abuse problem. Living like a leech or Parasite feeding off unsuspecting friends and family...
Katie was going places until she started giving it up to support her crack habit." "Ever since she lost her place and prostitutes herself out of her car she's nothing but a Bum-Diggum-De-van-(Jimminy) just replace jimminy with katie.
by DP Clown June 04, 2010
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see ya when your bum cracks

An expression of farewell. Usually said at the end of work
Paul: "It's time to go home"
Mark: " Yep i'm done. See ya when your bum cracks!!"
by Mainty O'Freddy July 27, 2006
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