Being fucked up, high, drunk, etc..
'Yakked' being the verb, 'goozer' being the subject
"Dude i'm yakked off the goozer right now"
"holy crap dude nice"
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!?"
Furiously, and sometimes violently stimulating the male genitalia
Dude, my girl totally blue balled me and then took off last night, so I went home and was totally waxing the yak skin.