A smooth-edged, thin, round piece of plexiglass that can be inserted into the user's navel. Its purpose is to provide a viewport or navigational tool for people whose heads are stuck so far up their ass they're unable to see or move about safely.

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

A thin, smooth-edged, round piece of plexiglass that will fit in the user's navel. Its purpose is to provide a viewport or navigational tool for people whose heads are stuck so far up their asses they're unable to see or move about safely.