Funny attempt (5)
I believe the answer is:
crack
'attempt' is the definition.
(I know that crack is a type of attempt)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for crack that I've seen before include "snap" , "Very skilful" , "Take severe measures - . . . . . down on" , "Break sharply; a joke" , "Try" .)