As always, one catchy rap based phrase begets spin-offs. If crunk is a combination of crazy and drunk, figureing out the definition of fucrunk shouldn't be too hard.

If it is too hard then simply it means
f*#kin' crazy drunk

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.

adj., "fucking crazy drunk". See crunk for the logic behind this extreme form of ghetto-style wanna-be blackness.