have you ever had anything climb up your arse. or be inserted?
It's been tried a few times ... once by a flea. I've heard that once a flea tastes ass meat there's no going back and it will always be an ass biter after that. I obsessed for an hour to make sure it was dead, before I could go back to sleep.
If I answer that question, in more detail, you and others will probably make fun of me. Let's just say two failed attempts, including the flea, and three successful attempts. That makes a full house, I think.