The emotional, sexual and/or just brazenly financial currency that woman, well-endowed by nature or science, trade in.
Man, I really dig Michele. She has one hell of a righteous rack ! But I just can’t afford the Big Tit Tax … my wallet is not fat enough, my dick isn’t long enough and my heart surely isn’t into it.
by brain child ! December 23, 2015
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A girl whose real skinny but has big ol titties
"That girl over there is super skinny but she has double ds... she's a skinny big tits"
by pete eckhart July 4, 2017
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The theory states that women with larger breasts contain more estrogen. (Estrogen is the hormone that makes women feminine. The more estrogen they have, the more feminine they are, i.e. the larger their breasts get.) It claims that because of the increase in estrogen, they are more emotionally unstable, more dramatic, and more insecure. Men that are attracted to big breasted women have to deal with an enormous amount of drama and chaos in their relationships.
Hey dude, have you heard of the Big Tit Theory?

Dude1: Dude how come every relationship I'm in is always so chaotic and dramatic?
Dude2: Don't you usually like to date big breasted women?
Dude1: Yeah, so?
Dude2: Well then the reason why your relationships are always dramatic and chaotic is because of the Big Tit Theory.
by najack60 January 30, 2018
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Girls who don't appear to have large breasts in their daily wardrobe but then when seen dressed to go out do, in fact, have bodacious ta tas.
Usually she wears hoodies but if you'd seen her at the club you'd know she's a sneaky big tits.
by Jonny Jonzes March 19, 2017
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bigger than anything on earth . It means 'huge'
BOY : OMG THATS WONHO'S BIG TITS
GIRL : WOW , IT IS!!!
by Cosmic_moa.. May 8, 2022
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A name for a female who has extremely large breasts, or in some cases can be joked around using a guy as the argument.
Guy1: That group of chicks from IONA are a bunch of big tit bettys (BTB's). I wouldn't mind titty fucking one of them.
Guy2: Yer, no shit.

Guy1: I saw this porn the other night, this chick had massive tits.
Guy2: Yet another big tit betty (BTB) making it big in the porn industry.
Guy1: Huh? Shut up.

Guy1: During PE that guy Crockster took off his shirt and damn, he is one massive BTB.
Guy2: Gross dude.
by Mummas September 4, 2005
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the person with the biggest boobs in Bundaberg. Has an amazing best friend with the initials JF and Jon is a NEWB.
by utterpqnage April 11, 2011
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