Joke this bad keeps chaps hiding? (10)
I believe the answer is:
punishment
'hiding?' is the definition.
(a hiding is a beating given as a punishment)
'joke this bad keeps chaps' is the wordplay.
'joke' becomes 'pun' (punning is a kind of joking).
'bad' indicates an anagram.
'keeps' indicates putting letters inside.
'chaps' becomes 'men' (I've seen this before).
'this' is an anagram of 'isht'.
'isht' enclosing 'men' is 'ishment'.
'pun'+'ishment'='PUNISHMENT'
(Other definitions for punishment that I've seen before include "Sanction" , "Penalty" , "Beating" , "Discipline" , "See 6" .)