Letting out a huge fart while taking a hot shower. The steam intensifies the effect, making it many times worse than normal, basically baking the smell into the walls, shower curtains, and towels.
This is similar to a Dutch Oven
, except much, much, worse, and is a reference to a popular method of execution
during the Holocaust
Dude, I was taking a shower with my girlfriend and I totally German Ovened her. The funny thing is, she's Jewish, so it hit her twice as hard.