A scrub is a guy that thinks he's fly
And is also known as a buster
Always talkin' about what he wants
And just sits on his broke ass
A scrub is a guy that cant get no love from me
Hanging out the passenger side
Of his best-friend's ride
Trying to holler at me

A dude who act like a playa or like he sumthin but really got nothin. A broke guy with no job, no car, no girl..etc

A loser with nothing to offer a woman.

Scrub, an otherwise inferior person in some what way. Most often refers to social standings, i.e. anyone who isn't The Big Jock or similar. Also refers to people who failed to make it onto whatever team/club/board/group, and also, in online gaming circles, refers to somebody who is not inexperienced but not very good at it. Also used in Magic the Gathering, as a derogatory term for a player who is inferior to you.

A scrub is a now generalized term used as a synonym for a "noob" or "newb," which is someone who is bad at a video game or activity in general.

Most of the definitions here, surprisingly, have nothing to do with the actual term. The original definition is related to a person who makes a mistake in a video game, which is such a bad mistake that it is clearly wrong, yet they persist in making it. The term derives from Street Fighter II, to describe some players that were so bad that they would mash their hands across the control pad, an act known as "scrubbing," because it relates to scrubbing a car or other object with a sponge. Thus they were deemed "scrubbers," or "scrubs" for short. Over time this term expanded throughout the gaming world, and then the real world, and lost its original meaning.

A deadbeat loser guy who be riding wit his friend all da time cause he cant afford his own car. Hes broke, wears cheap clothing and is usually unnatractive. Also usually gets some sort of assistance like welfare or foodstamps. Hes sometimes overweight, unnatractive and is corny and cant get wit the ladies.

Someone who sucks at life.

I.E. No job, no Car, no Woman, Sonic, etc...

a fat nasty broke man wit no friends most likely or just one retarded friend who aint willing to get up off his lazy foodstamp collectin ass and make somthin of his life. His mammy be drivin him around or his uncle and aunt and he dont know shit about ladies or how to get one. He gona be fat broke and on welfare his whole damn life cause he to lazy and has no self worth to make somethin of himself.