The home-sauna created when using electronicentertainment for long periods of time heats the room you are in to an unbearable amount. Having more than one piece of equipment which blasts out hot air (laptops, Xbox360s, PS3s etc) on for long gaming sessions is the main cause of Entertainment Sauna.
Dean: Dude, I'm totally sweating in here.
Jethro: You playing Xbox and looking at walkthroughs on your laptop? Typical Entertainment Sauna.
When you use the sauna and drink 20 pints of Guinness, so that you are drunk as hell when you come out. You a\may also start speaking Finnish with an Irish accent.
An advancement of the Dutch Oven, the Dutch Sauna starts with either a sauna or a hot shower, causing the room you are in to steam up. After completing that first step, you fart, piff, rip-ass, blow a fatty, or even shit while in the room. The result will be a warm sticky sensation all around you and a more potent fart. This will last for significantly longer than your average fart. It may linger in that room for days at a time depending on how long the steam is kept up. Enjoy.
When you're sharing the bed with a partner, you fart and cover the sheet over yourselves so that the air is trapped inside. And then you yell, "Turkish Sauna!!"