I still remember the first time my friend’s dad noticed me at a sleepover. I was staying at their house, and while I had noticed her dad checking me out on the sly, I didn’t think too much of it. I ran down to the kitchen that evening, and I didn’t think to put on shorts. I ran into her dad in the kitchen, with me wearing nothing but a white tank top and a pair of little white cotton panties with pink hearts. They left very little to the imagination, as I suddenly realized while he stared at me, not even disguising it. Since I have a thin waist I go down a size or two in panties, which stretches them out at least a few inches in the hips. Clinging to my ass, they had been through a few laundry cycles now and were getting dangerously thin. As he stared at me in my panties, unable to look away, there was no disguising the fact that he was fully erect. I could see his embarrassment, and honestly, I thought it was a little exciting. He left in a hurry, mumbling something.