Imm

n. Short for immortal. Usually used in MUDs.

The fucking Imm whimped all my shit.

whimp

v. The act of taking away from a player's skills, spells, or effectiveness in some manner, such as reducing weapon effectiveness or boosting mobs.

Also called mud whimping, player whimping, nerfing or blunting

My character got whimped by this asshole immortal.