boob

(noun) an ignorant or foolish person. Synonyms: dumbbell, dummy, dope, booby, pinhead.

(noun) either of two soft fleshy milk-secreting glandular organs on the chest of a woman. Synonyms: breast, bosom, knocker, tit, titty.

(verb) commit a faux pas or a fault or make a serious mistake. Synonyms: drop the ball, sin, blunder, goof. Example: "I blundered during the job interview."