44. Granny's Panties
My aunt is married and the mother of two children. She embraced a 21-year-old and started working with him. She tells him that she needs his underwear as part of a scavenger hunt. He had said to her that she could have them if he could have hers. She agreed, and they exchanged right there.
After adjusting herself, the child turns around and tells her she "can keep these" and gives her back an old pair of red-stained panties. Professor.