Drunken son in mummy's leggings? (6)
I believe the answer is:
tights
'mummy's leggings?' is the definition.
'tights' can be an answer for 'leggings?' (I have seen 'Female leggings' mean 'tights' so perhaps 'leggings' could also mean 'tights'). I am not certain of the 'mummy's' bit.
'drunken son' is the wordplay.
'drunken' becomes 'tight' (I've seen this in other clues).
'son' becomes 's' (genealogical abbreviation for son).
'tight'+'s'='TIGHTS'
'in' is the link.
Can you help me to learn more?
(Other definitions for tights that I've seen before include "Female leggings" , "Types of stockings" , "Women's garments" , "Film '25: Men in --'" , "Nether garments for women or acrobats (6)" .)