side boob noun a photograph showing the exposed side of a clothed woman’s breast US A voyeuristic fetish fuelled by exhibitionists such as Lindsay Lohan.
Even the side boob of Cassandra at the end of “Prophecy” didn’t instigate a thread. — alt.tv.highlander, 20 January 1997
“Unlike some of us, I don’t stay awake until three AM watching USA Up All Night on the chance they’ll flash some side boob.” — Christina Bartolomeo, TheSideoftheAngels, p. 152, 2004