I've had almost an identical experience....My Master tied me to a door, pulled my panties down at the back , spanked , paddled then flogged me (my bottom was BRIGHT red!!) I wondered why my panties weren't at my ankles as usual.....he reached around and caressed my balls, making my caged cock leak pre-cum in to my panties (also unusual, I'm usually never touched, it's about my Master's pleasure only). He finger banged me and whispered he wanted me to cum in my panties.....a minute, two at the most later I told my Master I was cumming. A few minutes later, he took my panties off, wiped the cum off my chastity cage on to the gusset of my panties. He started fucking me , and was plesantly surprised when he reached around and gagged me with my cum soaked panties!! Tasting my own load, gagged with my cute black lacy panties, ankles & wrists tied to the door as my Master fucked me.....my panties are getting wet just typing this and thinking about it!!
I was tied to the doorknobs of the bedroom and had to watch him fuck my wifes ass. She didn't want it in the ass but he took it. then he tied her to the doorknobs and she watched me take him.