Deriving from the term "muggle" from Harry Potter, if something is muggled than it simply means that it's fucked up and/or weird.
Dude, that girl is hot, but her face is muggled
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!'
Tweet - 'Muggled.'