Non-Muggers
OK, these are the people who doesn't mug. At all. They go around, have fun, enjoy life. They look down on all classes of muggers, labelling us all no-lifers, but hey! The rest of us will have a rather nice life in future. At least, that's the norm. If there are a few who doesn't (touch wood!), don't blame it on us!
Normal Muggers
These people don't mug all the time. In fact, they call themselves slack! They are the general population. They mug when there are tests. They mug when exams are near. They do their assignments (most of the time) and they actually have a life. They watch movies and go out and have fun. BUT they still study. See? That's you and me!
Hardcore Muggers
Okay, these people are not as creepy as the Super Muggers, but they are still rather intimidating. They eat, drink and breathe as normal people too, albeit skipping some meals. You will still see them with books on hand all the time, but you will at least you will hear them say, "So should i go home now? or should I stay and study?" At least they contemplate going home. They are just hardcore, not insane.
Super Muggers
Super muggers are just people who mug like they breathe. they mug standing up, they mug sitting down. They mug in transit, they mug upside-down. They mug as though tomorrow does not exist to mug. They are the sort you see in school EVERYDAY in the same place, same position, maybe even in the same clothes! (Do they ever need to bathe and eat?!) They have a perpetual stoned face, most probably from the overdose of knowledge forever seeping into their brains. They don't drink water, they drink coffee. They don't eat food. They don't breathe. They eat and breathe their notes. They are the ones who turn slowly towards you with murder in their eyes when you talk to them, coz you are disturbing their mugging time. These are the people who are close to attaining nirvana in the mugging world and are to be respected, even though most people keep clear of them coz they are just so weird. Oh, and they are the hated ones who drag up the means and averages of every module they take. To be honest, they seem like supernatural beings.