Slash Slash

Slash is with Coco — on Jay Leno's Tonight Show.

Proudly showing his allegiance to Conan O'Brien, the former Guns N' Roses guitarist rocked out on Tuesday's Tonight Show while sporting an "I'm with Coco" button on his guitar strap.

Jay Leno: Conan and I "got screwed" by NBC

This is, of course, not the first time Team Coco has pulled a fast one on Leno: Last month, a fan took a photo with the restored host with "Coco FTW" written on his hand.

Check out Slash's performance and fashion statement below. (Don't blink or you'll miss it as NBC attempted to shoot around the button.)