to do a tweedy (or take a tweedy) is to hit out at someone in blind rage or to just flip out
mitchel: shut the fuck up paddy, what do you know!
paddy: wow don't do a tweedy!!
Someone who has a different guy and hair colour for every day of the week
all in all bitch and whore
mitchel: oh my god... i dumped a guy for you and you still won't fuck me!
guy: you dumped me for another guy dumbass.... omg mitchel...