The circumstance where you find yourself in the position of needing to defacate but unable to locate a suitable venue for the proceedings. The resultant clenching of the sphincter in the hopes of preventing an incident of touching cloth results in the feeling that the incipient turd is reversing back up into your lower intestines.

May be performed intentionally in order to preserve the waiting feces for later use. E.G in a cleveland steamer.

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