Hooker's top right behind wig next to his pants (5,5)

'hooker's top' is the definition.
I know nothing about this answer so I can't tell whether this works.

'right behind wig next to his pants' is the wordplay.
I cannot quite see how this works, but
'right' could be 'rt' (abbreviation as in Rt Hon- the Right Honourable) and 'rt' is present in the answer.
'wig' could be 'rug' (rug is a slang term for a wig) and 'rug' is present in the answer.
an anagram of 'his' is 'shi' which is present in the answer.
'next to' could be 'by' and 'by' is found within the answer.
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?