The laziest of all bros - A bro between the ages of 18 and 22 with no job and no car. Circumstances in which they graduate from High School are rare as they either never show up or are too busy smoking pot. Days are spent taking naps, skateboarding or biking, while nights are spent... taking naps, skateboarding or biking. Bro slags lack the ability to run and also to motivate themselves to do anything, making them attractive commodities to most young females.
Because the Bro Slag was such a lazy pile of crap, he couldn't afford to ride a dirtbike with his crew, so he stayed home and took a nap instead.
That kid threw a bottle at that Bro Slag, but he was too lazy to hit him so he just called him a fag.