MuM

MuM;
Methed-Up-Moron
MumHead
MumTime - time to methup or methout
Mumedup - tweaking hard
Mummers - group of MumHeads tweaking hard
MumNuts - nickname
MumDum - nickname
MumBasket - Going to die from doing meth
Mummed Out - coming down from days of meth - possibly sleeping

Don't be a Mumhead!
He's mummed out.
These mummers are everywhere
I'll pick up MumDum
MumNuts is an idiot
Me was mumedup and got a bad batch, sent him to the MumBasket
That was his last MumTime