- (boob) drop the ball: commit a faux pas or a fault or make a serious mistake; "I blundered during the job interview"
- (boob) dumbbell: an ignorant or foolish person
- (boob) breast: either of two soft fleshy milk-secreting glandular organs on the chest of a woman
- (The Boob) The Boob is a romantic comedy film released by MGM in 1926. It was directed by William Wellman and starred Gertrude Olmstead, Antonio D'Algy, George K. Arthur and Joan Crawford.
- (boob) breast, especially human female; Idiot, dummy, dork; To make a mistake
- (Boob) Dumb guy (Lake, 154)
- (Boob) (acronym, bolt out of the blue) (AmE, USAF) Surprise mission.
- (boob) sissy, effeminate male child, cry of the bittern
- a woman's breasts (use with caution.* It's not bad but in mixed company it might be better to say "breasts") .