My mom had a low back issue off and on for many years. It could get so bad it’d have her bed ridden for a few days. On this particular occasion she had been in bed most of the day with it. She called out my name and I went to her bedroom to see what she needed. She asked me to get the heating pad for her so she could put it under her back. I came back with the pad, plugged it in and handed her the pad. She struggled a bit and then asked if I could get it under her as she couldn’t without it hurting. I took the pad and lifted up the covers and saw that she was naked except for a pair of panties. I was instantly excited and taking in everything I could see. Glimpses of her small breasts, smooth skin and of course the soft mound of her pussy under her silky panties. I worked to slid the heating pad underneath her and I intentionally let my hands touch the sides of her hips and soft upper thighs. My mom was trying to lift herself up to help me as best she could but couldn’t do much so it took a bit longer than it should have but that was fine with me. I was raging hard by this time. I continued to work getting it underneath her letting my hands touch her as much as I could. Once I had it where she wanted it I slid out from underneath the covers. She asked me to hand her the control and to come give her a kiss and that I’m such a sweet boy. I was throbbing at this point. When I left I went straight to the bathroom and came to the images of my mother. I did feel a bit guilty for getting horny while helping her when she was hurting but I just couldn’t help myself.