Forget the number of bootlegs you own or how many times you’ve seen him live — until you have a Bob Dylan tattoo on your butt, you’re not a real fan.

Jamie Campbell Bower is a real fan.

The actor, who plays Henry Creel / Vecna on Stranger Things, seems pretty stoked about the just-released teaser trailer for A Complete Unknown, a biopic about Dylan starring Timothée Chalamet. “As a man who has Bob Dylan tattooed on his butt cheeks I can safely say I am VERY excited about Chalamet as Dylan after seeing that trailer,” Campbell Bower wrote on X.