One ain't enough, I'm rollin up two extensions

from Juicy J (Ft. Wiz Khalifa) – 20 Zig Zags Lyrics on Rap Genius

Meaning

Juicy’s trying to get real high so one joint won’t cut it.

“Extensions” are two joints put together like an extension cord.

Refer to 2 Chainz’s Undastatement

To help improve the meaning of these lyrics, visit “20 Zig Zags” by Juicy J (Ft. Wiz Khalifa) Lyrics and leave a comment on the lyrics box