misewell means "might as well" and is used by girls who receive a 1210 or lower on their SATs.
tor: I am driving by your house.
katrin: Well you misewell come in and watch Monkeybone.
Comes from the aussie slang for "May as well". Use when lazy and/or aussie and/or drunk.
Midge: Yo, Anf, wanna go scout some poon down at local convenience store?