The Old McNulty is a sexual act in which at least one male or transvestite must be involved. It includes (but is not limited to) putting one's testicles in another individual's (male or female) mouth while ejecting feces on to their forehead.

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