Matt Groening Bart Simpson Smokes Blunts ... Here's the Proof

2/14/2015 12:15 AM PST

Matt Groening can draw Bart Simpson doing anything -- and he can do it in his sleep -- so if you say "make it interesting" when he's doing a custom sketch for you ... buckle up!

"The Simpsons" co-creator was doodling for a few fans at JFK this week, and one guy got way more than he expected. If you've ever wondered what a strung out, crack alley version of Bart looks like ... wonder no more.

Check out the vid to see the sketch, start to finish. Based on the fan's response ... we'd say Matt earned his 'hood pass.