Double Steamer
While someone is taking a hot, steamy shower; you drop a load in the adjacent toilet, making sure to leave the lid up for a nice surprise.
I enjoy taking a Double Steamer! Not only do I get to relax in a steamy sauna, I get to leave a steamer for my dick roommate who ate my all my twizzlers.
Double oven steamer
When you do a reverse pile driver on a girl and put your finger or toy in her anus at the same time you are plowing away and then you drop a dookie on her face.
I gave her a double oven steamer, she loves it when I pile drive her at the end of the couch and she loved the dildo in her butt! Man when I dropped that duce on her face she choaked and almost kicked me in the face!
Double Decker Steamer
When one takes a dump on another person's body (like a steamer) but followed by another person taking a dump on the original dump. More is better...
After completing the steamer, she needed more so I asked my buddy to give her a double decker steamer.