Someone who happens to a freak, not in bed or anything good, just a freak. Most shlupkas try to fit in with everyone, and fail miserably. Shlupkas seem to hate each other, because they know that they're all losers, and therefore, fail once more.

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