Based on context clues, I'm inclined to believe that they have characters and he's more or less the "fall guy" so she can be the "Bully." It also just sounds like he was going for "toilet paper isn't an impenetrable shield, and if there's any smear left before you wipe, you've got poo particles on your hands" but pivoted to "this sounds like a really good bit if I can milk it."
This sounds like when that podcast dude realised you shit directly in the toilet and not in your hand first
https://youtu.be/xZ-SlTaCFfQ
Wat?
Amazing. People are amazing.
Based on context clues, I'm inclined to believe that they have characters and he's more or less the "fall guy" so she can be the "Bully." It also just sounds like he was going for "toilet paper isn't an impenetrable shield, and if there's any smear left before you wipe, you've got poo particles on your hands" but pivoted to "this sounds like a really good bit if I can milk it."