a phrase used to describe the body shape of the lotus elise S2.
lordy, the new elise looks like a right old sack of tits.
the phrase was orginally coined by purebob in a heated debate about cars, pies and pasties.
by ajussi October 26, 2005
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Where a boy sticks his sack on or in between a girls tits..
Katelyn: i want you to stick your balls on my chest?

Will: okay, sack tits..
by $P3NC3 September 1, 2009
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Tits that are so saggy and wrinkly, that they resemble a ball sack.
So did you sleep with that one cougar you were talking about?

Yeah, but she had some ball sack tits.
by AsianLee January 30, 2011
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