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1. quad-boob
Quad-boob occurs when a woman's bra is snug enough that part of the breasts squeeze up above the fabric of the cups, creating an upwelling of boobs visible even with a shirt on top. To the unlearned boob admirer it may give the impression of four boobies.
Check out that quad-boob over there, she must have escaped from Jabba's Palace.
2. Muffin Tit
Where some of the breast is coming out the top of your shirt and bra. It forms a quad boob effect
Muffin tit is also linked to quad boob
3. quad-boob
When a woman's breasts spill over the top of her bra, giving her the illusion of having four breasts.
I'd better go up a cup size because all my bras are giving me quad-boob.
4. Quatro-Leche
A girl who is so fat that her rolls make her look like she has four boobs. A quad-boob.
Ya dude, total Quatro-Leche.
5. Pillow Top Cleavage
The effect that occurs when a woman wears a bra that's a cup or two too small for her thus forcing her boobs to pillow above the edge of the cup creating deeper cleavage than normal.

A more elegant term for quad-boob.
That gal's bra is slightly too small. It's pushing her boobs up and giving her pillow top cleavage.
6. boob muffin
when a woman wears a bra that is too small for her and her boobs poke out of the top.
that woman has some huge boob muffins
7. quadraboob
When a larger breasted females bra fits incorrectly and the boobs fall out of the bra giving the illusion of four boobs.
Her bra fit so bad she had quadraboob.
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