Coloquialism, common in Australia, used as a slang reference to anal sex. It is a play on the slang term for New Zealanders, ie "kiwis" (thus a "kiwi fruit" would be a homosexual). The term is used frequently to refer in a literal sense to unwanted anal sex, in fact having the actual meaning of some untoward event or reprisal being invoked on the target of the speaker.

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