When you're young and living with your parents, you *have* to be creative to find someplace to do the horizontal bop. Lots of times, you can't even get horizontal.
1) Got BJ sitting in a tree in broad daylight in prominent Kansas City urban park.
2) Did it many times in same park's parking lot (in a
Datsun 1200 , no less), and parked in the street one block over from future 1st wife's parents' house.
3) Back of my '66 Chevy Biscayne on a back road of a park, way back in the woods...was accosted by four kids riding dirt bikes.
4) Outside in my suburban town of Grandview in too many places to remember
5) On girlfriend's couch, right around corner from parents' open-door bedroom while they were watching TV
6) In the bathroom of my son's private hospital room
There's more, but I'm old and can't remember...