When two people pull their buttcheeks apart and touch assholes
Wanna get crazy and give me a fresh septic kiss?
When solid output into the toilet is ongoing, you flush while still seated to "clear things up." The toilet clogs (unbeknownst to you!); the water rises up and kisses your ______.
"Honey, you just took a shower...why are you in there again?"
"Oh my GOD! I got Septic Kissed!"