Wiz Khalifa Planning To Be 'Stoned AF' For First Pitch At Pirates Game

Wiz Khalifa is getting ready to throw that high cheese when he takes the mound at the Pirates game ... 'cause the rapper says he's planning on being "stoned af" for the ceremonial first pitch.

The Pittsburgh native -- who's in town for his "High School Reunion" tour -- will do the honors before his hometown team hosts the Cleveland Guardians on Monday ... and he's got a perfectly on-brand strategy in place ahead of his big moment at PNC Park.

"Finna get stoned af and throw this first pitch at the pirates game," Wiz tweeted to his 36 million followers.

It may not just be ganja powering Wiz through the toss, though ... 'cause he also added, "Shroomed out throwin a baseball is crazy."

To prove he wasn't kidding (not like he needed to), Wiz also posted a picture of his supply ... showing two big jars of weed, as well as some mushrooms.

You could say Wiz is sorta paying homage to former pitcher Dock Ellis, who famously claimed to have thrown a no-hitter while high on LSD back in 1970!!

High or not, Wiz will still probably throw a better pitch than 50 Cent.