used by "mans dem" in hackney and other ghettoised ares of north and east London. it is also a shit song by shystie. means to become violent and overtly aggressive often for no particular reason. sometimes people shouldnt mess with your rice and peas ya get me?
west indian origin
"you dont wanna get arms house!
ill bring arms house to your mums house!
you dont wanna bring no beef!
bring some beef you'll loose some teeth!"
To be matted means to be ignored by someone on IRC, even though you know they're there. Its meaning derives from the times when someone talks to matt860 about something important and he just ignores them, dispite him being there and reading the text.
Its meaning has been stretched to include describing a situation where you talk in a public channel (eg. to say "hello") and the other members do not respond.
I wanted to arrange the game but he just matted me.
Oh god I'm so matted.