I saw someone a while ago quip something to the tune of "furries only have one joke, and it's their sex life".

And, yeah, but there's a very good reason why that is.

Most people when they join the fandom from a less accepting environment. There's a lot of internalized shame, especially if you were in the closet about your gender or sexual orientation. One way that people cope with adjustments is through humor.

Furry sex jokes are often thinly veiled self-deprecation.

"Haha, look how down bad I am." -> decoder ring -> "I could have never even joked about being a thirsty slut before I found this space, and I'm still not fully comfortable with that."

Not always. But sometines.