Meek thinks he’s better but Cass knows he can out-rap Meek. This line is somewhat reminiscent of a certain Canibus line though…
Also, gassed up means hyped up, like he mentions in the line above he’s getting his songs played everyday.
Ass is used as a homonym to set up his metaphor;
When you fart, it’s most commonly known as gas, and you fart out of your butt, which is your ass.
Suggestions
0
i think this is like when people are baptised in a river