I got a whole lot of OGs, and
I’m rolling up for anyone in here that knows me
Everybody smoking, yea it's a party, oh, its a party
Everybody smoking papers, nobody smoking blunts
Bitches rolling weed and my niggas fucked up
Yea it's a party, oh, it's a party

from Wiz Khalifa (Ft. Chevy Woods & Neako) – Reefer Party Lyrics on Rap Genius

Meaning

Just in case ALL of Wiz Khalifa’s other songs haven’t specified this, he smokes a whole lot of weed. A whole lot.

“Everybody smoking papers, nobody smoking blunts"
Might refer to Wiz' personal favorite, paper joints and that he hates blunts. (Which many rappers prefer)

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