break down, lose it, snap(verb)
lose control of one's emotions
go, conk out, snatch up, click, give way, shoot, tear, bust, break down, collapse, snarl, crush, dissect, analyse, break, take apart, die, lose it, snap, crumble, decompose, crack, break up, give out, tumble, photograph, snatch, analyze, fail, crumple, flick, rupture, go bad
lose it(verb)To be explosively angry; to lose one's temper.
lose ones temper, lose ones rag, go ape, go apeshit, blow ones top, hit the ceiling, hit the roof, go snake, freak out