Step Brothers fans are an insanely devoted bunch, to the point where someone threw an actual goddamn Catalina Wine Mixer last year on California’s Catalina Island, and it became the hottest ticket in town.

During a recent appearance on Conan, Step Brothers star John C Reilly revealed some of the other tributes to the film he’s seen, including disturbingly detailed tattoos of him and Will Ferrell in one fan’s posterior region. 

Reilly seemed genuinely confused and confounded that someone would do this to their own butt cheeks, which makes us love this whole situation all the more. Enjoy:

Source: Team Coco.