When your Paris Hilton Wannabe girlfriend sucks some other guys dick off and you find out about it, dont let on then get her mad drunk until she passes out phone your friend round take her handbag toy chouihaha dog, lift up its little balls revealing its crustacious gooch, while your friend takes out his digital camera rub the dogs gooch all in that bitches face then send the picture to everyone you know..

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