I am not an upskirt person typically, but this is a weird one...
I was at a family event last night, and I was sitting in a chair. I turned around to talk to someone I knew who was behind me to my right. Next to that person, though, was a middle-aged mom in a gorgeous blue flowery dress, but she had her legs up on her chair, exposing her cotton grey underwear, BUT I wasn't looking up her skirt at all--I was talking to the person next to her and I could see what I saw in my peripheral vision. I never intentionally look up skirts or dresses, so I never looked directly nor planned to.
Once the lady realized she was flashing everything, she kept her legs in place but quickly tugged her dress between her legs to cover up. That sudden movement caused me to look in her direction involuntarily, but I looked at her eyes, not at her dress. The look of absolute disgust she gave me could have killed some people. I kept looking over at her while I was talking with the other person, and she didn't take her eyes off me with her murderous look. I admit I was sort of upset that she was so mad at me for something that I didn't even do, but I wasn't going to start a conversation with her about it with 15-20 other people around, no way.
After I was done talking to the person, I looked forward toward's the kids' practice, and I could see her reflection in a window next to me, and she kept glaring at me for the next 20 minutes!
After the activity, I was standing up and waiting for the kids to be done, and she came over and stood by me, and I thought she was going to chew me out for, again, something I didn't even do, but she never said anything. She kept looking at me then, away, then looking at me again, but she didn't look as upset.
Finally, she came right next to me to throw something into the garbage can I was standing by, but she missed and bent over to pick up her garbage, and I stepped to the side to give her room, and I saw down her dress and into her bra, seeing a very dark nipple smiling at me on tiny A cups, and I didn't even try to look at that, either!
My kid and I were parked next to her in the parking lot, and when she saw us getting into our car, she waved as she backed out.
Most confusing half hour of my life!