slippery when wet Share definition Flag A phrase used whenever a good burn happens, usually used for sexual innuendos. Steve: Today I ate Megan's peperoni roll. Scott: Haha, slippery when wet dawg. slippery when wet by bmwyeahyeahyeah August 23, 2007 0 0 Get merch Get the slippery when wet mug. Buy Now — $32.95 See more merch