Mother in law walked in without knocking!
I have a thing for flashing and getting caught masturbating by my MIL. In the past I have flashed her by walking past the spare bedroom we have which she uses when she stays. I have made it pretty obvious and she now knows I have a thing for flashing her! Recently (after a few drinks) I told her I was sorry for my behaviour and she said she forgave me because she thinks of me like a son. I also said I was grateful that she had never told my wife. She laughed that one off and said "it's fine". This is the backdrop where my latest story begins; last week she stayed for two days / one night whilst the wife was away with work. I sat up with my MIL watching TV and at 10pm i told her I was going to bed. I knew this would spure her on to head to bed as well. So I let the dog out, brought him in and them headed to bed. The dog usually sleeps in a dog bed in my room with the wife but when the wife isn't around the dog wonders around the house like a lost lamb (i knew this). So I closed my door ajar, got a couple of porn mags out, laid them on the floor, took my clothes off and started masturbating. I desperately hoped the dog or something else would cause a problem that would require me to run out of my room (naked) or for my MIL to knock on my door (to which I was going to answer naked). Within a couple of minutes however I heard movement outside my door so I sat on the edge of my bed, facing the door. My cock was dangling loose in full view. Then she just walked in (without knocking) passed my poem mags on the floor, picked up the dog bed and walked out! She knew exactly what I'd been up to!! And I find this a major turn on. She didn't look directly at me but the close proximity means it is impossible for her not to have seen me. I have masturbated over that thought several times now. I'm really looking forward to the next time she stays over; 0)