I was helping our neighbour (f35) with some deliveries at her house, large boxes, bulky items she wasn’t able to move by herself. She asked if I could help and agreed. She’s tall, slim, sandy blonde hair… very sexy. So when all was done she went to make coffee and I asked to use the bathroom to wash my hands. I passed by her bedroom, the door was open, and I saw some laundry left on her bed, waiting to be put away. I could tell immediately it was underwear by the lacey strings. Without any hesitation I went in and grabbed the first thing I could get my hands on: her black thong. The rush felt amazing. She has no idea. And now I have her thong, not sure what to do with it.