Stands for "too damn good".
Used mostly in online gaming after you've just dominated someone else; such as when you've just knifed in counter strike.
Can be used in conjunction with other words such as "2dgmf" which stands for "too damn good motherfucker"

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.