When you're in a bad situation and it's looks like it's not going to work out, but then it does.

As if you have a pie shack you're trying to sell, but who's going to buy a pie shack? Then someone comes along and wants to buy a pie shack. Problem solved; the pie shack is sold.

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

When your in a bad situation and it looks like its not going to work out, but then it does.