Partying males keeping from occupying popular male territory? (4,2,3)
I believe the answer is:
isle of man
'male territory?' is the definition.
'Isle of Man' can be an answer for 'territory?' (dependent territory of the UK). I'm not sure about the 'male' bit.
'partying males keeping from occupying popular' is the wordplay.
'partying' indicates anagramming the letters.
'keeping' is an insertion indicator (some letters kept inside).
'from' becomes 'of' (of can mean from or belonging to).
'occupying' is an insertion indicator (inserted letters occupy or enter the word).
'popular' becomes 'in' (something that's 'in' is fashionable).
'males' is an anagram of 'slema'.
'slema' enclosing 'of' is 'sleofma'.
'sleofma' inserted inside 'in' is 'ISLE OF MAN'.
Can you help me to learn more?
(Other definitions for isle of man that I've seen before include "Island in 33 Across where cats have no tails" , "Its cats are said to be lacking tails" , "Here are Peel, Douglas" , "Where to find the House of Keys" , "TT venue" .)