When something has been, or is 'mecked up' then it basically means 'f***ked up'.
It's a
handy word for when you're around
parents or teachers...or
maybe even the queen if you're lucky.
Dennis: OMG..my
dog just ate my homework...
Otis: haha...shame Miss Dicksy is gonna kill you.
Dorita: Yh, your ass is grass
dood.
Dennis: This is SOO mecked up man. Wtf am i gonna do??
Otis: Don't ask me. I don't have a
dog..
Dorita: Sme.