A person perpetually in denial over there own drug addiction. Often leading to embarrassing situations that may include propositioning family members and siblings for more drugs.
Damo: I havent done pills for like 6 months dude
Mitch: Dude ur being a moggsy...you did pills last weekend.
or
Sam: Dude im so wasted but theres no chicks in this joint
Mitch: ur sisters here dude..you could chuck a moggsy?
A meggysab. An unstoppable force that will fuck your shit up. If anyone fucks you over don't fret, meggysab will have a scheme up their sleeves. They are also the sweetest assholes you've ever meet. If you ever meet a meggysab chances are they're 5'3 cousins that can outdrink frat pledges, who also have matching ass tats. Treat a meggysab right because you'll never meet another bitch as sweet yet psycho as them.