faceplant

Short definition from Wiktionary

Noun

1. 1
   The act of landing face first, as a result of an accident or error.
2. 2
   Death or defeat in a multiplayer online game.
3. 3
   A wrestling move in which an attacking wrestler forces an opponent down to the mat face-first without a headlock or facelock.

Verb

1. 1
   To land face first.
2. 2
   To completely fumble or fail in an activity, usually in a spectacular fashion.