Depending on how you look at it: an affectionate moniker, an exact personality profile, or an insult.

The term is used to describe the one person who is the most cuntish, nasty, ruthless, relentlessly rude person in an: apartment block, school, work place, or facebook group etc.

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