The contact made between the shoulder of one person (usually male) and the boob of a female leaning over the shoulder of the other person.
Dude, I totally got some shoulder boob when that waitress delivered our food!
by Rik F August 15, 2008
That comfortable spot on a guys chest under his shoulder and above his nipple. Where girls (or guys) usually put their head when cuddling with a guy.
Mmm, his shoulder boob is so soft and squishy, i'm going to fall asleep now.
by rainbowBLEH June 12, 2011