You got more than me? Then shit roll somethin'
If you have more weed than Sean, why wouldn’t you have one rolled already? Come on, man.
Another interpretation could be that he’s saying if you have more money than he has, you should be the one supplying the weed cause you have plenty to blow on it.
To help improve the meaning of these lyrics, visit "All I Know" by Big Sean (Ft. Wiz Khalifa) Lyrics and leave a comment on the lyrics box