I mixture of the Scottish slang word 'mugged' meaning drunk, and 'muggle' the word for non-magic folk in Harry Potter. This is the ultimate Harry Potter fans's way of saying drunk.
'I was totally muggled on Saturday night! I drew glasses on myself in permanent marker and tried to fly on Katie's mop!'
(In football/soccer): to beat your opponent in a one-on-one contest by tapping the ball between his legs and running around him before he/she has realized what happened.