^I can see how it can come across that way if taken seriously, main thing is I think knowing who Ame is and her humor. She's a Vtuber and very much a gremlin, and I think it was when she was playing Mario that she made a joke about Ground Pounding the Chat's mom. So it became a meme that she "ground pounds" moms, one I think she plays into, but I haven't watched her streams in a bit. Said meme is still used in fan art at least. With that in mind you then have the joke song from the 50s, "I Saw Mommy Kissing Santa Claus", and you combine it with said meme to get this fan art.
So it's fair if you're not comfortable, I'm hoping though that this information will help ease that feeling a bit. Since it's very much comedy/joke/meme art, not meant to be taken seriously at all.