The Swamp Donkey is not to be mixed with the definition of Swamp Donkey, as The Swamp Donkey is a sex position only used when the male and female are both in the bath (swamp) where the male is the giver and the female is the receiver. while in this action the female must act like a donkey while the male sits back and relaxes.

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