We got caught
My wife and I got a luxurious cabin and shared it with a couple that we are friends with. We thought we'd be in for the night and my wife and I were having sex. The other couple came in to see if we wanted to have some drinks. Normally being caught having sex wouldn't be such a big deal but what they saw was a bit awkward.
My wife knows that I'm bisexual and that I'm a bottom. So she fucks me in the ass with a strap on. So they walked in and saw me on my hands and knees and my wife fucking me in the ass with a strap on.