Finding it funny (6)
I believe the answer is:
amused
'finding it funny' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for amused that I've seen before include "Beguiled" , "was entertaining" , "Provoked mirth in" , "Mildly diverted or entertained" , "Queen Victoria wasn't!" .)