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 Steamer by fakeOprah December 17, 2011

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 oven steamer by Xavior64 March 3, 2010

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.

Double Decker Steamer by Billy Bob Ray October 9, 2010

Double streamer 

When a guy takes a piss and part of the pee goes one way and the other part goes a different direction.

John:Dude, theres pee all over the floor. Ted: Sorry dude, i had a double streamer

Double streamer by ndtanman9 January 19, 2008