Word Study
lose it
WORDNET DICTIONARY
Verb lose it has 1 sense
- lose it(v = verb.emotion) break down, snap - lose control of one's emotions; "When she heard that she had not passed the exam, she lost it completely"; "When her baby died, she snapped" is one way to act, behave, do
Sample sentence:
Sam and Sue lose it
For further exploring for "lose it" in Webster Dictionary Online