Jafs let their lack of sexual swagger effect every aspect of thier lives. They tend to do poorly in school becuase they are so focused on getting laid, or getting thier crush to like them more then just a friend. Jafs sometimes go into a temporary depression on Sundays when they realize they have to go through another week of school with misery and no girlfriend. This pessimistic mood is known as SNGM (Sunday No Girl Mood).
The Jaf anthem would arguably be Iris, by the Goo Goo Dolls, or Everything You Want by Vertical Horizon. Both songs feature lyrics about desperatly wanting to be with a girl, but she is completely oblivious to "Mr Right" and what is actually best for her.
Oh my god, i feel like such a jaf, its saturday night and plans fell through again..
Friend 2: really?? dude i'm sooo JAF!!
-When a good friend likes, you but doesn't like you the way you do.
- The syndrome where you can never get a boy/girl-friend because you're too good friends.
Rob- *Dude, you shouldn't have been such good friends*