The next pair, she let me tie the straps for her. I was able to lean close to her tan legs as I tried to focus on the straps in my fingers. As I fumbled with them, I kept sneaking peeks up her skirt. She made no effort to close her legs and I took every opportunity to look. By the time she had on the third pair, I thought I noticed a little damp spot on the crotch of her panties. Maybe she was flashing me; maybe she was getting a little turned on by allowing me to peek up her skirt. Maybe that was why she wore those lacy panties that barely concealed the glorious goods underneath. Whatever the reason, I was enjoying the show.
She sat there with her legs just slightly apart and decided that she wanted to buy all three pairs of shoes. She asked me to ring them up while she went to look at a pair of sandals she liked and might buy on her next visit. I scooted the stool back, and she stood up. All of the fidgeting around in the chair, all the movements of her legs and wriggling that sweet ass as she did so apparently caused her skirt to ride up in back and for whatever reason, static cling maybe, her entire ass was exposed as she walked over to the sandals. Her lacy, pink, bikini panties were there for all to see. She had no idea that her ass was exposed and looked at the sandals unconcerned. Several customers noticed. A few of the women started to approach her to tell her, but thought differently and left the store. A group of high school jocks had stopped in to look at some sneakers, and when they saw her standing there in her panties, they stopped dead and just stared. After a minute or so, she must have noticed that others were staring and she looked around. When she realized that her ass was out there for all to see, she quickly tried to adjust her skirt and cover herself. Her frantic efforts didn't work, for not only was she unable to cover herself, the panicked tugging at her skirt caused it to come unsnapped and fall down around her legs. Horrified, she bent over to pull up the skirt, and I could see that the wet spot on her panties had gotten even bigger. She ran out of the store clutching her skirt and trying to pull it up over her butt.
By now, I was really turned on. I had seen up her skirt, eyed her panties, watched her get aroused, and then humiliated. After the commotion she caused, most of the customers had left. I took the opportunity to go to the men's room. I pulled out my cock, which quickly got fully hard, and I jacked off as I recalled what I had just seen. When I pictured the panicked look on her face as she bent over to pull up her skirt with the wet spot in her panties in plain sight, I came hard. After catching my breath and cleaning up a bit, I returned to work.