"Wanksta" was the track that put 50 Cent on the map. It initially appeared on 50's 2002 No Mercy, No Fear tape before getting shine via the 8 Mile soundtrack, ultimately peaking at #13 on the Billboard charts. NMNF was his first mixtape after signing with Eminem and Dr. Dre, essentially serving as a warm-up run for Get Rich Or Die Tryin', which dropped in February '03.
50 Cent conceived "Wanksta" as a diss towards all wannabe gangsters, among whom (in his eyes) was Ja Rule. Thus began Fiddy's long and storied tradition of clowning on other rappers and Floyd Mayweather.
In high school you was the man, homie
The fuck happened to you?
I got the sickest vendetta when it come to the chedder
If you play with my paper you gotta meet my Beretta
Now shorty think I'mma sweat her sipping on Amaretto