A person or individual that deliberately or more commonly due a careless attitude, fails to observe the appropriate dress code for any given occasion. Mumpkins can always be found atttending funerals.
The word is a
bastardisation of 'pumpkin' the squash plant n
Cinderella that albeit temporary, still delivers an appropriate transformation
on the night of the ball.
Jesus look at Teddy! the idiot
Mumpkin's only burying his own, sweet, dear mum in a
dark blue suit! What a
fuckwit!
