“Let me take off all your clothes. Disconnect the phone so nobody knows. Let me light a candle so we can make it better. Making love until we drown.” – Color Me Badd, I Wanna Sex You Up
You can light a candle. You can get out satin sheets. You can even obtain a velvet cum rag. But nothing will make drowning to death while you are fornicating any better.
In fact, I can think of many reasons why that might be the worst way to die. Someone is eventually going to find your dead bodies intertwined. It can’t be very fun for them to pry two dead waterlogged fucking people apart. Plus, in your last moments, you may wish to think of your family or friends, and not hoping that you can finish up quickly before you’re condemned to eternity with everlasting blue balls.