Knife Manual/You Stupid Asshole is a split single by Gas Huffer and Mudhoney, released on Empty Records in 1992. It was part of a series of singles pressed on clear, saw shaped vinyl.

The inside of the foldout sleeve features a spread of a Mudhoney vs Gas Huffer "fight", photographed by Alice Wheeler.

Track listing

Side 1 - "You Stupid Asshole" performed by Mudhoney, written by the Angry Samoans. Side 2 - "Knife Manual" performed Gas Huffer, written by the Silly Killers.

Releases Saw shaped clear vinyl - MT-166 - 1992

References