My sister washed all her underwear and was too embarrassed to go without, so she covered her pussy with a band-aid! As she went about her day, her skirt rode up, and I couldn't help but stare. When I asked about her panties, she said, "you can't see them, can you?" and didn't seem to care. But watching her got me hard, and when she saw my boner, she started to get excited, her band-aid soaked through. At this point, anything goes!