Lose it (4)
'lose it' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for snap that I've seen before include "Break sharply - a simple card game" , "Go to pieces < , it's said, quickly" , "Speak in a sharp angry tone" , "Still" , "Photograph - card game" .)
'lose it' is the definition.
(both can mean to become very angry suddenly)
This is the entire clue.
(Other definitions for flip that I've seen before include "Propel with finger - lose one's temper" , "Throw a wobbly" , "Go crazy - other side" , "Toss - flick - turn over" , "Flick or toss, say coin" .)