Several years ago we had friends who never knocked, they just walked into our house (and us, theirs)
We also were not into the "open relationship" stage yet.
We had an oversized ottoman in our living room.
As furniture goes, it was way too big for the space. It was always in the way of wherever you were trying to get to.
It did serve its purposes though.
It usually had magazines, TV remotes and at any given time one of our cats.
One afternoon, we were feeling a bit kinky. Kevin had me tied to it by the four corners. My feet on the floor, with ankles tied to the "feet" on one end of the ottoman and my arms hanging off the sides, tied to the feet at the head of it.
My head was hanging off the end of it and Kevin had his dick pistoning in and out of my mouth.
It's my favorite position for giving head. Kevin is more length than girth and when my head is hanging off the ottoman (or the bed), it makes for an almost strait line, right down my throat. That is, if you don't mind some guy's balls bouncing off your eyes.
Suddenly the front door opens and in walks our friend Doug, carrying a pizza and a six pack.
He walked right past us, into the kitchen to set down the beer and pizza before coming back to the living room.
It took him a few seconds for it to register what he was seeing.
Boy! was he getting an eyeful.
There I was on my back, my knees facing the front door, legs spread and my completely shaved, dildo filled pussy staring him in the face (This was before women being completely bare down there had become mainstream) and Kevin's dick thoroughly buried down my throat.
Kevin stopped pumping my face. I knew something was up but I couldn't even look up to see what it was, because my head was upside down and he still had his dick in my mouth.
I couldn't even use my hands to push him away, because I was still tied to the ottoman.
Finally, Kevin took a step back and I was able to lift my head up and see what going on.