A girl who makes herself available to the men around her, allowing them to think she will perform certain sexual favours, whilst not in fact ever performing such favours. Hence useless boob. The boob is there, but useless as she will not allow anyone to make "use" of it.
by Sir William Arsenpuffin April 20, 2003

When a girl that wears a bra that is too tight, and her breast fat hangs over the edges. This creates small diagnal dents across her chest. Like a muffin top, but on your chest.
by Agentcoopersgurl January 3, 2009

One boob that extends the same distance as if you had 2 boobs. its quite unfortunate and can often happen when so much fat has extended across the barrier from one breast to the other, forming a uni boob.
"yo dude! man your boobs arent individual any more"
"i know dude, coz i totally got uni boob. its the new fashion"
"i should get me one of those"
"i know dude, coz i totally got uni boob. its the new fashion"
"i should get me one of those"
by lizzie millard December 2, 2007

When a woman has her breasts surgically augmented and proceeds to display them in low cut tops, tight tops and without a bra as much as possible for every occasion.
Sue: "Oh no, do you see how low cut that top is? She is leaving nothing to the imagination!"
Jane: "Oh girl! She's got her party boobs out!"
Jane: "Oh girl! She's got her party boobs out!"
by IreneIsNotMyName October 31, 2014

by TRIALSVIP January 25, 2010

The part of the boob that guys can "accidentally" touch in public, without getting slapped for it. Also known as breastage or sleavage.
by collegekid. September 19, 2009

by alex March 19, 2004
