Poseidon’s Tongue
When you drop a sizable dump into the toilet creating a splash back with sufficient height to be able to reach the anus. The Poseidon’s Tongue is the one drop of splashback that licks inside the anus
Dave: wow, I dropped a hefer of a dump and ended up with a Poseidon’s Tongue
Keith: that’s horrendous, you poor bastard
Keith: that’s horrendous, you poor bastard