Hails from shaft, as in mineshaft (a deep hole in the ground), boom hails from bum, affectionately known as the arse, or anus.
Olga is a real dirty bitch! She loves shoving things up her boomshaft!
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.
Log in with Facebook to save your favorite definitions
and share them with friends.