having many faults, clumsy, careless

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

It's when you're sitting on the edge of a Lake and you look to your right and see a small Canoe and you can almost see that there is a hole in the bottom of it somewhere but you're not too worried because it's obviously not fully submerged so you clean out the dirt and get into it without paddles, somehow make it to the middle of the Lake and then start to sink and panic because you're not in a Lake but in a shark pond.