The gap between a tight fitting shirt and a woman's breasts seen from the side. This is the most sexual type of cleavage and should never be overlooked.
Boy 1: Yo dude, see that chick over there?
Boy 2: The masculasian?
Boy 1: No way man, the other one.
Boy 2: The one with the sexy gap between her boobs
and shirt?
Boy 1: Basically, that's Over Boob Cleavage.
Boy 2: Shit son! That's the sexiest thing ever.
Boy 2: The masculasian?
Boy 1: No way man, the other one.
Boy 2: The one with the sexy gap between her boobs
and shirt?
Boy 1: Basically, that's Over Boob Cleavage.
Boy 2: Shit son! That's the sexiest thing ever.
by SexPanther_Spreading_the_Truth March 2, 2010

Verb. The activity of purposely looking at facebook albums to find pictures of cleavage. Typically found in pictures from a club night, beach vacation, or pool party. This activity usual just leads to looking up porn.
Hey man, I was doing a Facebook Cleavage Search last night and saw that Sarah's friend tagged her in a bunch of club photos. She was looking hot!
by jxb December 15, 2011

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.
A more elegant term for quad-boob.
by TongueTiedGuy November 18, 2012

by Lil' Bobo's January 16, 2010

John "dude put that away!"
Tom " what do you mean?"
John " your left nut cleavage you sack of shit!"
Tom " what do you mean?"
John " your left nut cleavage you sack of shit!"
by Fatjason69 November 29, 2013

by Mystery from the Pickup Artist January 5, 2009

Rob: "Did you see Mrs. Johnson today? She totally showed us some Australian Cleavage Backstyle when she bent down to pick up those papers."
Edward: "Yeah, it was totally hot. Who knew she had a tramp stamp?"
Edward: "Yeah, it was totally hot. Who knew she had a tramp stamp?"
by Lilyperks December 4, 2012
