Snickers that's disgusting, subsequently eating it (8)
I believe the answer is:
laughter
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'snickers that's disgusting subsequently eating' is the wordplay.
I cannot really see how this works, but
'disgusting' could be 'ugh' and 'ugh' is found within the answer.
'subsequently' could be 'later' (subsequently means later on) and 'later' is found in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for laughter that I've seen before include "Howling" , "The expression of lively amusement" , "Sound of amusement" , "Manifestation of amusement" , "end of the comedian" .)