'Muscle Milk' is the debut album from keytar playing Glaswegian crunk/noise wimpcore duo Gay Against You, consisting of Oats Soda, aka Joe Howe (who also makes music under the moniker Germlin), and Mr Big Softie, aka Lachlann Rattray (who creates solo music under the name Yoko Oh No!).

Together they perform live with keytars in homemade costumes creating lo-fi power-pop/noise anthems dealing with themes such as lactose intolerance, animal rights, body building and the aztecs. They list influences including Minor Threat, Cindi Lauper, Mae Shi, The Locust and Child Pornography (the band not the illegal activity).

The artwork for this album was created by Devon Varmega from LA band Hair Party.