Vulgar speaker given tropical fruit flip (2,7)
I believe the answer is:
go bananas
'flip' is the definition.
(both can mean to become angry suddenly)
'vulgar speaker given tropical fruit' is the wordplay.
'vulgar speaker' becomes 'gob' (rude term for the mouth, something which speaks).
'given' is a charade indicator (letters next to each other).
'tropical fruit' becomes 'ananas' (plant genus which includes pineapples).
'gob'+'ananas'='GO BANANAS'
(Other definitions for go bananas that I've seen before include "Become mad or furious" , "Become wild" , "Get very annoyed" , "Be extremely excited" , "Lose one's cool" .)