Pinhead Gunpowder is an American punk rock band that formed in the East Bay area of California, in 1991. The band currently consists of Aaron Cometbus, Bill Schneider (bass), Billie Joe Armstrong and Jason White. The band's name comes from a brand of "high-octane" green tea served at the Arcata co-op that was discovered by Aaron Cometbus during one of his many dumpster diving adventures.