The act of being both mean and devious. To do something sneaky with malicious intent.
John: Hey, where'd that last box of donuts go?
Judy: I think I saw Susan walk out with them when she left.
John: But they were for all of us... What a meavious bitch!
(Ma-lar-i|ous) Derived from the words "malaria" and "hilarious" < Something Grim yet hilariously funny; pertaining to a bizzaro, madcap humor (Looney Tunes) but also something Grim or Evil (Grim & Evil). Mostly used in a positive fashion.