Means a state of total awareness.

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

Complete awareness; Total state of awareness. Coming from from the japanese fighting style, Karate. When you have achieved Unagi, you can defend & prepare yourself from any danger at any given moment.

It's a concept... OF TOTAL AWARENESS.

1) According to Ross Gellar: A state of total awareness, okay. Only by achieving true unagi can you be prepared for any danger that may befall you.
2) Also, a type of fresh water eel.

IT'S NOT SOMETHING YOU ARE IT'S SOMETHING YOU HAVE

A state of total awareness in a highly disciplined form of "kah rah tehy" where one's reaction speed is so fast that it is nearly psychic. Things that can be predicted from: body language, momentum of a objects, and anything that you can assume from basic physics. The proper sign for "Unagi" is shown by making a fist, then putting out the index and middle fingers on your temple (almost like a salute) before saying Unagi, and after showing Unagi.