FAILSLAM 

A failure so bad, it slams you in the face.

Person 1- "Pass me that soda please"
Person 2- *while passing the soda ends up spilling it*
Person 1- "Woooooow, FAILSLAM"

FAILSLAM by Delia Jean December 25, 2009

Failswamp 

A series of failures, leading up to a larger, more catastrophic failure.

Three people passed out, someone threw up on the carpet, and the cops came to the house. The party was a failswamp.

Failswamp by Vinegrette July 15, 2010