Your boyfriend keeps hovering around you, fetching water, offering blankets, and trying very hard to be useful. When you tease him for acting like a puppy, he realises he likes the sound of that far more than he expected. Make him crawl over to you, rest his head in your lap, stroke his face, call him your good puppy, and listen to him get whiny, eager, and desperate to prove how useful he can be with his mouth before he’s finally allowed to touch himself.