6th floor hotel balcony at VA Beach. She was bent over the railing and I slipped in from behind. Was in the late 90s (before smartphones and social media), pretty sure a pic or video are on the web.
Nontraditional and kind of gross: bowling alley men's room. We both had our pants around our ankles, she sat on the countertop, I slid inside of her with my hands gripping her thighs and one foot against the door to keep it closed. Like some weird slightly drunken Twister game.
I had cemetery sex while in hs. Warm summer evening, the stone was a large flat crypt type, black granite, still warm from baking in the sun all day. Fun time.