A frivolous word used to emphasize a predisposed incident, resulting in displeasure and usually nonchalant humor poorly portrayed by nearby companions.
The real slang fail actually comes from party foul. It is commonly used when something goes wrong or does not fit the atmosphere of the situation. "Party Foul" is basically now being replaced by "FAIL" (Search Party Foul).
if someone spills beer -- "FAIL"
if someone breaks something -- "FAIL"
if someone embarrasses themselves -- "FAIL"
if someone does anything wrong -- "FAIL"
a congratulatory motion combining a knuckle-touch and a hi-5; one person holds out their hand in a motion as if they are giving a hi-5 while the otherpunches the palm of their hand
*Person A raises hand to give hi-5*
Person A: "Great Job!"
*Person B punches person A's palm*
Person B: "Hey, thanks man!"
*they have completed a 'fail'"