A way to describe someone who is so obsessed with something that if that "something" is gone, then they'd be helpless without it; As if a mermaid were in a bathtub and someone pulled the plug.
They're such a bathtub mermaid, obsessing over a stupid thing like that.
by AzureGummy March 29, 2017
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A particularly scary creature living in your tub. Originated from a fearsome picture of Whoopi Goldberg.
"oh God! I'm not taking a bath NOW."
"What is it?"
*points* "It's the Bathtub Goblin...AGAIN."
by U.Steve November 24, 2008
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Not anything sexual... just a dog in a bath tub
"yesterday was Christmas, and I woke up to a fucking dog in a bathtub! Thanks mom!"
by Autumns Definitions November 20, 2016
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When you are trying to stuff your nuts into a woman's fart pipe and as soon as you cram one in, the other nut pops out. Leaving you with only one nut in her asshole, but never two. - Very similar to trying to get two or more cats in a bathtub, one always escapes when trying to get the other in.

The only man to accomplish this feat is the very famous "aww nigga, nuts in the ass dick in da pussy" porn actor. Who overachieved the feat by keeping both nuts in a females asshole WHILE stuffing his giant dong in her vagina. Making us all feel inferior.
Man, I was trying to stuff my nutsack into Bertha's asshole, but all I got was cats in the bathtub
by TittyfaceJenkins March 28, 2016
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The item of marijuana paraphernalia that is evolved when one is so chronic that one brings ones gravity bong into the bath with oneself.

Usually in the form of a 2-liter soda bottle with the bottom cut off, the bathtub bong is always the piece in a marijuana smoker's collection that he has had the most fond memories with.

Because you can't call yourself a pothead if you haven't passed out in a bath full of warm bong water.
Stoner: "Yo, Brosephus Rex, where's my bathtub bong?"
Roommate of Said Stoner: "I was using it in the sink like a normal person, you fuckin' pothead."
by CocaineMorman420 March 19, 2009
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Someone who manufactures illicit drugs in their back room, usually on a desk or in a bathtub. The conditions these drugs are made and stored in are usually very dirty and the drugs made are usually cut with various other substances (everything from cheaper drugs to talcum powder to bleach to rat poison), either because they have limited knowledge of drug manufacture and chemistry or (more likely) because they couldn't care less about the health and well-being of their prospective customers. They instead prefer to use less (or none at all) of the advertised drug per pill/dose and therefore increase profit.
A guy sold me a pill last night. He told me it was Ecstasy but it was mixed with all sorts of shit and I ended up in hospital. I'm sick of these bathtub chemists ripping me off!!
by MichaelToTheJ May 10, 2011
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A perjorative nickname for MSNBC host Keith Olbermann
Bathtub boy got slapped by his NBC bosses
by Teddy1203 September 8, 2008
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