A total douch who lies to women and lies about them after the relationship is over to his friends and others that the relationship never happened, while always drunk and talking about his cock that he doesn't know how to use or get girls off with.

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