There is always a non-legend Selwyn. Selwyn is really smart, academically, and in life too.
Selwyn admits that he isn't perfect.
He always feels rejected, but he's gotten used to that. Just say hello, and he might answer back.
He always has a very unusual approach to questions, but he's a mad lad.

Good on ya Sel.

when you're hungover as shit after a spending a night drunk as a skunk

This name only used on people who has really attractive cute face

a really fat kid who gets on everyone's nerves and cries when your class is late to lunch, or he doesn't get a grilled cheese sandwich!

A Selwyn is pretty much when someone tells you they're going to do something, then either doesn't do it, or just completely fails in that sense, usually ruining that section of the day or just making it annoying to be around.
It is a worse version of admitting defeat or a gg, which is what the concept was first derived from.

An ass, a dick, and a corrupt fucker that sucks you into his friendship, I do Luciferian shit on him, wring his neck because Lucifer told him to steal my coffee, yet I love him, and he and I are Luciferians, but he's acting stupid.