Mark Berry, commonly known as Bez, is a British dancer, percussionist and author best known as a member of Happy Mondays and Black Grape. He was a maraca player, dancer and the mascot of Salford band Happy Mondays, having been invited in by lead singer Shaun Ryder shortly after the band was formed. He is chiefly remembered for his bizarre style of dancing, and use of the maracas - the Mondays' second single was called "Freaky Dancin'" in tribute.

This great design is loosely based on the infamous T-Shirt worn by Bez at many shows which read: Drop Acid Not Bombs!