I was 17 when I saw my Mom punish my 15 year old sister by laying her over her lap and spanking her with her sweat shorts and panties down. She was so mad at her she didn't even care that I was in the same room. I just watched my sister's shorts and panties slowly slide down her legs with every stroke of the paddle. !Damn! did she have a nice pussy. Just sat there getting a hard on looking at her pink pussy and butt hole, while my Mom toasted her butt cheeks red. I remember her face was also red when she got up all embarrassed, pulled her clothes up and ran to her room crying. Never though I would be jerking off that night thinking of her. I wish my Mom would spank her naked the next time, so I could see if her tits are filling up.