Yak (Yakking)

To vape into someone's butthole

Yak (Yakking) is when you blow smoke into someone's asshole.

"YO man, I was yakking so hard smoke was coming outta her mouth bro!"
"She sat on my face after I took a hit, I had no where else to put it!"
He had blown the vape into their asshole.
Singular: "Did you just Yak!?"