Help finding a manga

I’ve been thinking about this yaoi but I genuinely can’t remember anything from it. Like character or anything. The only thing I remember is the scene of them doing it the bathroom (bathtub, standing up) and the bottom tries to pull out but is only allowed if he can pull it out himself. He gets most of it out but his thing hits the wall and then you can guess what happens next.

I genuinely can’t remember anything else. If you know what it is please let me know!!