The Chunky Choo Choo Share definition Flag When a man covers his penis with Chunky Peanut Butter and then procedes to have sex. Shit we're all out of peanut butter because she was ridin' the chunky choo choo last night. The Chunky Choo Choo by his grace April 13, 2008 0 0 Get merch Get the The Chunky Choo Choo mug. Buy Now — $32.95 See more merch