Tried this with my wife once when she said, "I'm not in the mood". Felt fricken awesome and she liked it because she literally had to do nothing.
Later on she admitted that it was kind of hot, and now whenever she's laying in bed, she said I'm free to just roll her over and stick it between her thighs.
This thread needs more cum in her panties and making a mess.
I love this doujin. Pure hotness.