She moaned badly. I was getting some sweaty smell, as it was starting of summer, and we didn’t put on the fan. I liked sweaty sex and the smell was ...reat. I ran my nose just near the crotch of her panty and took a deep breath to take in the smell. It was intoxicating. She was jerking her body badly. The area was little wet due to her flowing pussy.I ran my tongue tracing her pussy crack through her panty and she holds my head and pushed it towards her crotch and she grunted like arghhhhh! I. I was wearing a matching knee length suede skirt and three-button jacket over a long sleeve white blouse. My leather gloves were in the pockets of the hip length suede jacket in the overhead compartment. Just 2" heeled pumps on my feet and a feeling of 'I can't believe I'm not asleep and dreaming' in my head. Karen was fast asleep in her seat next to me.We got home at about 1 p.m. and put Alice away in her closet. The bags were re-packed and we headed back to the airport. Just four hours later. She turned away to put her panties in the hamper. I must have lost my mind. I took hold of the towel she had wrapped around her body. I pulled it away.I think we were both shocked by what I had done. I was now looking at my Mom's chubby body. Since my Dad left us, Mom had put on some weight. Her tits were always large but now her hips and ass had filled out. In that shocking moment I stood up and lowered my pants and underwear to the floor. Mom was now staring at my semi-hard cock.I was. "Would you like something to eat, or maybe a drink?"Cathy looked up and found herself looking at a petite beautiful Polynesian woman, dressed in the figure hugging uniform of the airline."A drink would be fine thanks" Tea, coffee, wine or spirits?" White wine please"When the stewardess returned she was carrying a tray with a glass of wine and food on."I thought I'd bring you some food, just in case, do you mind if I join you?" No I guess not" Thanks, it's a quiet flight, everyone else is.