(noun.)

A particularly unattractive woman who is following, walking behind, or last in a group of much more attractive women.
Joey: Whoa! That chick is hot!
Ramone: Man, and so is that girl!
Joey: Damn! Check out her friend...
Ramone: Ugh... that last one though... She looks rough... what a boo caboose.
by Tiger's Other Other Other Girl January 15, 2010
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a booty that's big enough to be hunted and hung on a wall
Cameron couldn't live without Amy's moose caboose. So he shot her, and hung that ass on the wall.
by 6cameron12 February 02, 2008
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When you cheat in a game and other people in the game identify that you were cheating and threaten to ban you but before the ban you get worried so you enter the denial stage of the Kübler-Ross model where your depression needs to be mitigated through furious masturbation in order to jump to the final stage - acceptance.
Josh: "What you doin man?"
Noah: "Man I think I'm gonna get banned in {random Steam Game}"
Josh: "Why?"
Noah: "Because I was using an aimbot."
~ Later~ Noah Captain Caboosed himself.
by computergroove July 17, 2017
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When you stick a cucumber in the anus of a Brazilian model.
I went to Rio last week and gave this bitch a green caboose.
by DirtyLion November 09, 2013
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the white person term for the butt, arse, or asshole of a human.
the end of a human body.
Jill: I'm ready for it Phil!
Phil: Alrighty...but bite on a pillow, I'm gonna put it in the poop caboose!
Jill: Oh shit...
by pooplo August 13, 2016
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The incredible phenomenon when two women are ass to ass and pleasure themselves simultaneously with a double-headed dildo.
Imagine my surprise and delight when I walked into the bedroom to find Roxy and Abby goin' at the double caboose! The 8th wonder of the world does exist.
by VoodooJay January 25, 2019
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When many attractive girls travel with one ugly one at the end; see Brain, sloth, or brain train.
"Oh man, looks like the brain train is rolling in, hopefully the sloth caboose gets knocked off."
by Rob Engle August 28, 2005
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