I walked in on my mother in law.
There is no other way to describe my mother in law than that she is a MILF, Total milf, She looks like my wife but very well aged with bigger b****, Last weekend we attended a wedding for a family member and my mother in law who lives three hours away stayed with us, we were all getting ready, my mother in law had showered and was wearing just a housecoat and I overheard her ask if she could use my wifes hair dryer, my wife of course said yes then she told her mom to just get ready in our bathroom which is off the bedroom attached to the walk in closet, my mother in law gathered up her stuff and headed to our room as I pretended not to notice.
I was waiting for the opportune moment and when my wife went downstairs to help the kids I figured it was now or never, I walked to our room, opened the door and the bedroom was empty, I walked up to the bathroom which has a pocket door, I quickly slid it open and my timing couldn't have been better, My mother in law was standing in front of the mirror in just her panties and nylons with her bra in her hands, I opened the door and pretended to freeze, She turned to look at me and must have expected my wife, She looked at me and her whole body jerked with a start, Her b**** jiggled and she fumbled around, dropped her bra, grabbed her housecoat and covered herself up.
I said "holy s***" then said "Oh god, I am sorry" and turned to walk out, She slid the pocket door closed and I left the room, My wife was in the kitchen and I walked up and said "You could have told me your mom was in our bathroom", She looked shocked and said "Oh goodness, Sorry...You didn't?", I nodded and said "Yup", My wife apologized and said I meant to tell you but got distracted with the kids.
Later when we were alone I apologized to my mother in law and said "I am sorry for...um...walking in on you And especially for my inappropriate comment", She looked a bit puzzled and said "Inappropriate Comment?", I could feel myself starting to sweat and said "yeah...sorry...I just...Um...you're b**** are great", She ran her fingers through her hair and turned beet red and was obviously VERY uncomfortable saying "Um...Its ok, Lets just forget it happened", I agreed and we left it at that.
That night in bed my wife said "you should probably apologize to mom, I know it was an accident but...", I told her I did and she asked "Is she ok?", I told her "yes" and we went to sleep, I SOOOOOO badly wanted to tell her that her mom has great t*** but figured I better leave it alone.