The self-attained thought that occurs upon watching an action film and believing that you could emulate them lead character.
The films in question are ones in which one protagonist is going solo against the rest of the world (eg. The Bourne Trilogy, Shooter, Taken) whether that be the government, the law or the given enemy.
Effects can be long lasting.

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