Ponce deffo means gay, homo, always admiring yourself etc. Benni's example.
Ponce: I have a spot on my neck, and I am scared to pop it.
Mate: Don't be such a girl, you ponce!
Example 2.
Ponce: I am scared of cats, as I was bitten as a child.
Mate: Don't be such a ponce, cats are harmless.
Example 3:
Ponce: I have been using my Wife's cream to keep my skin nice and soft.
Mate: Behave you ponce, be a man.
Example 4:
Ponce: I hope it doesn't rain, I hate getting my hair wet.
Mate: Behave your ponce, water won't kill you.
Example 5: Mike Rainbird.
Benni.