Somone who always buy's, and smokes low grade marijuana.
"dude all that allen kid smokes is schwag, hes such a schwagger."
The word scaley is most commonly used to describe a shady, stealthy, backstabbing person. The acual word came from the description of a snake, which is a stealty low living reptile that you wouldnt want to be described as.
Man, that Allen kid slithers like a fucking snake, hes so scaley.