About 20 minutes into the movie, my daughter reached down by our feet to grab some popcorn, and placed her knees down on either side of my legs. As she started to sit back up, she slipped, and I instinctively grabbed onto her thighs to steady her. That's when her nightgown rode up and I saw that she was wearing a thong. Light blue, lacy. I tried to look away, but I was mesmerized as I helped her back to a seated position on my lap.
For the next 5 minutes, I tried very hard to focus on the movie, and not what my daughter was wearing underneath her nightgown. I was treasuring this rare family moment, and didn't want to frighten and disgust my daughter by getting an erection, for christ's sake. I was able to focus again on the movie, until she went down for more popcorn. Again, she placed her knees on either side of my legs, but this time, she pushed her body down so her abdomen touched my knees as she reached down. Again, her nightgown slid up and her thong and ass were exposed. I quickly glanced at my wife, but she was engrossed in the movie.
"I'm coming back up, Dad, can you grab on to me?"
I tentatively placed my hands on her upper thighs and began to pull her back. The feel of her soft skin under my fingers made my cock twitch as I gazed intently at the piece of fabric covering her pussy. Jesus Christ. Shit. I was getting an erection. And I was wearing sweatpants. Fuck.
In a desperate attempt to hide it from her, I grabbed a blanket that was draped on the back of the recliner and tried to shove it between us as though I was cold.
"Good idea," said my daughter. "I'm freezing." And she yanked the blanket out from between us and sat back on my hard, sweatpants-covered cock. She obviously felt my hardness, because she froze in the process of putting the blanket over us. Fuck.