Attempt to eat a waistcoat is a sick satire (8)
I believe the answer is:
'sick satire' is the definition.
'travesty' can be an answer for 'satire' (thesaurus). I am unsure of the 'sick' bit.
'attempt to eat a waistcoat' is the wordplay.
'attempt' becomes 'try' (synonyms).
'to eat' indicates putting letters inside.
'waistcoat' becomes 'vest' (synonyms).
'try' going around 'avest' is 'TRAVESTY'.
'is a' acts as a link.
Can you help me to learn more?
(Other definitions for travesty that I've seen before include "pantomime" , "Grotesque distortion" , "Mockery, grotesque imitation" , "Terrible distortion of something." , "Grotesque misrepresentation" .)