The Collaborative International Dictionary of English v.0.48:

boob \boob\ v.
   to commit a faux pas or fault.

   Syn: sin, commit an offence, blunder, goof.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

boob \boob\ n.
   1. an ignorant or foolish person.

   Syn: dumbbell, dummy, dope, booby, pinhead.
        [WordNet 1.5]

   2. a female breast. [informal or vulgar]

   Syn: breast, bosom, knocker, tit, titty.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

boob
    n 1: an ignorant or foolish person [syn: dumbbell, dummy,
         dope, boob, booby, pinhead]
    2: either of two soft fleshy milk-secreting glandular organs on
       the chest of a woman [syn: breast, bosom, knocker,
       boob, tit, titty]
    v 1: commit a faux pas or a fault or make a serious mistake; "I
         blundered during the job interview" [syn: drop the ball,
         sin, blunder, boob, goof]