An ex-GF and I were out at a beach resort for a weekend. She was normally a pretty proper lady but she squeezed into a dress that she intended on wearing with shorts and I convinced to wear this micro short thing without anything else. After being in the club for a bit we went to the bathroom area and in the hallway were getting grabbing and without anyone around I went for it and pulled down her black thong and put it in my pocket. It was intense for her because like 15-20 mins she asked in the sweetest way with her latina accent
"Babe, can I have my panties back?" 
I told she could get them back later. A few tequila shots later and she is loosened up, dancing sexy up on top of a speaker on the dance floor and getting sloppy with her dress anytime her arms come up high, inhibitions gone. Later that night she blew me on the hotel balcony even though there was people on the next hotel outside their room. The following day and many other times I loved bringing this up and seeing how wet she got from hearing the details on her showing off her body with several guys and a few girls seeing her bare waxed crotch.