Yes?
In my boyfriend’s brother’s apartment. In the brother’s bed!
Guest bedroom of my parent’s house (friends were using my bedroom for the same activity). Parents were out at a birthday party.
In my bedroom while my parents were away.
My friend’s house on a bed about three feet away from my sleeping buddy.
Frankfurt, Germany.
Do you think we’ll get a “wedding night?”
Frankfurt. That made me giggle. I’m so juvenile. 
In her bedroom in her parent’s house.
Maybe from a born-again virgin.
In our friend’s bedroom.
In the backseat of my parents’ station wagon, as my friend drove it through Atlantic City in the middle of the night.
My dorm room.
Since this is a where, not a when - it doesn’t really apply.
Main residential building on a vegetarian hippie commune in Topanga Canyon.
Came very close to being able to claim that it happened on the violent locked ward of a psychiatric bin about 3 months earlier, but that opportunity was reluctantly passed up.
In the bedroom I was staying in at my grandparent’s house while I was going to nursing school. They were out of town and said not to have anyone over. I don’t listen well. Nursing school is a great place for a straight guy. Lots of memories.
In room 205 of the Surburban Lodge Hotel.
Living room couch at home. Don’t know where my mom was at the time. “Not home” seems to be the only relevant part of that, though. 
On the rug, on the floor of the game room, upstairs, in my parents’ house.
(That makes it sound like 4 different places, doesn’t it? Sorry. Just trying to be specific - the memory is ultra-crisp.)
Whew, I thought I was going to be the first to say in the backseat of a car. A Chevette at that. It was cramped.