Why not? I think it's funny. It's obviously not meant to be taken seriously. Heck, I think the only reason they're doing it is for more 20th anniversary publicity.
I only find this funny on the grounds that I think of the same Marge that protested the idea of the Burlesque House, and how she had a fit when the doctor gave her breast implants.
Suddenly I have an urge to burn down the Playboy Mansion.
But yeah, Rule 34 of the internet. While I think this is sickening and horrible, I've seen worse things on the internet (oh yes, I've seen WAY worse than this).