Show stuff in revolting commercial (5)
I believe the answer is:
drama
'show' is the definition.
(I've seen this before)
'stuff in revolting commercial' is the wordplay.
'stuff' becomes 'ram' (ram can mean to stuff or push).
'in' is an insertion indicator.
'revolting' says the letters should be written backwards.
'commercial' becomes 'ad' (abbreviation for advertisement).
'ad' in reverse letter order is 'da'.
'ram' inserted into 'da' is 'DRAMA'.
(Other definitions for drama that I've seen before include "theatre show" , "Series of events involving conflicting forces" , "Theatrical performance" , "theatre production" , "Play (as a genre)" .)