The nickname given to the Finnish sniper Simo Hayha by the Russians who he caused to metaphorically (or perhaps not metaphorically) wet their pants during the Winter War November 1939–March 1940 by the amount of sheer ass he kicked.

Simo Hayha's hit record was at least 700 kills in under 100 days.

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

This is something that can happen when you smoke too much pot.

It is called this because when it happens you go white and start to look like a corpse