A roommate once told me that cows "have one hole for babies and pooping", i.e., a cloaca, but he didn't know that word. I told him that isn't true, they are typical mammals so they have the full complement of parts.

I was sitting at my computer so I pulled up a diagram which he said was wrong. Then he asked to show me and started searching for things like, "cow hole", "cow butthole and birth canal", and "cows with just one hole" before I regained my senses and told him to go away.

The worst part though was the next day when my girlfriend was using my computer and saw the searches so I had to explain to her the conversation and he came back in to defend himself and tried to look up cow smut AGAIN.