Synonyms for Boob (same or very similar meaning)
WordNet sense 1 (an ignorant or foolish person):
booby, dope, dumbbell, dummy, pinheadWordNet sense 2 (either of two soft fleshy milk-secreting glandular organs on the chest of a woman):
bosom, breast, knocker, titWordNet sense 3 (commit a faux pas or a fault or make a serious mistake):
blunder, goof, sin, sinFrom the ODE community, based on WordNetadd/edit