That's what Tubby used to do with his slipper. Maybe you can find some stuffed toy or something that you can slowly introduce instead of your hand under the comforter.

I think this is perfectly normal behavior. We'll have to get the decency police on it, though, to determine if it's perverted or not.
Edwina sat on the floor looking at him ...very perplexed.
Seems Eddie has the females in the house all perplexed, might want to ask the curly haired one. He might be able to explain it.