Poseidon's dickslap Share definition Flag Giving a dickslap with a sweaty dick covered with semen. John gave Bernadette a Poseidon's dickslap after having sexual intercourse. Poseidon's dickslap by Poseidon 5000 October 24, 2018 0 0 Get merch Get the Poseidon's dickslap mug. Buy Now — $32.95 See more merch