Hot, huh? But it's not what you think. What sounds like two (or more) people going at is actually just a broken clothes washing machine. A stationary video of the sounds a broken washing machine makes has topped the viewing and comment charts at Nico Nico Douga, and we have a bit of the action above here for you.
The swashing, gurgling, and squeaking of this busted machine has prompted some of the funniest comments I've ever read, aside from all of the laughing. Many say to fast forward to the 3:30 mark of the video (on Nico), where it seems that the couple pauses, and then picks up the pace. If you have an account, check out out here. Otherwise, the video above will suffice -- you'll get the added bonus of a funny face.