1 definition by e-pot
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 July 31, 2008