biker dope Share definition Flag high quality methamphetamine, considered the best dope to mankind. usually sold and smoked by bikers. 'you guys wanna buy some biker dope?'oh shit biker dope? I'll buy a 20 biker dope by xKoolaid June 11, 2018 0 0 Get merch Get the biker dope mug. Buy Now — $32.95 See more merch