When a guy is about to ejaculate from masturbating, he readies a "kleenex condom" - in other words, wraps tissue paper over the top of his dick, as to catch the semen and prevent making a mess.

It is named "kleenex condom" because it involves the use of facial tissue - Kleenex being a popular brand, and serves a similar function of a condom because it catches ejaculate, however Kleenex tissues could never actually serve the purpose of a real condom, and kleenex condoms SHOULD NOT be used as a prophylactic for sexual intercourse.

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