"Clarence" is a mixed bag for me. I'm not a fan of the series, but I think it has some funny and clever moments and I enjoy watching it from time to time.
That being said, this episode was awful.
It started in an average manner but eventually it turns into something quite gross and awkward (And also not in a way that it could be considered remotely funny at all), feeling almost as if it was something from the "Ren & Stimpy Adult Party Cartoon"
I personally didn't enjoy this episode at all, and I think it could be easily considered the lowest point of the whole series.
If this had been my introduction to Clarence, I think I would have avoided seeing this show permanently.