by The_Kerse June 27, 2020

When your chest is unsupported and you're boobs are exposed from the side, usually while laying down; gravity will take its course and allows the breasts to fall to the side of the body, occassionally exposing them.Occuring most often while wearing a tank top
"i just want to give you a warning before i go to sleep....sometimes i get side boob"
"whats side boob?"
"sometimes my boobs fall out the sides of my tank top"
"whats side boob?"
"sometimes my boobs fall out the sides of my tank top"
by e-pot September 24, 2008

n. What is seen when a topless woman (or very fat man) turn far enough to the side to see the breast, but not the nipple. Many movies, in order to keep a PG-13 rating, show only side boob. Braless women who wear sleeveless t-shirts are notorious for side boob.
by FuryOfDerwin September 22, 2005

The portion of a woman's breast visible from the side due to loose fitting or skimpy clothing, such as a vest with no top or bra, through the arm of a tank top, or a button undone.
by gigablip October 29, 2008

The side view of a female breast that is usually unintentionally exposed by a female wearing a loose shirt or revealing bathing suit. Arguably almost better than actually seeing a fully exposed breast, the sideboob is the "profile" of a breast without exposure of the nipple. The side boob gives you a great sense of what you are working with while also keeping it PG-13.
by EFP3 April 28, 2009

by Jeremy Robinson December 27, 2007

by kayfay92e May 02, 2009
