Doing a Simpkin Share definition Flag When you tell a really shit joke, do a stupid dance, or just be a general twat, then your doing a Simpkin Oh God, Dave's doing a Simpkin on us. Doing a Simpkin by Vortex April 3, 2004 0 0 Get merch Get the Doing a Simpkin mug. Buy Now — $32.95 See more merch