In the cab of a fire truck on an airport tarmac. (emergency lights on, no sirens and we were stopped waiting for a flight to land)
In the 'hose bed' of a (different) fire truck parked in a fire station
In the bathroom of a fire station at shift change
Going over a looong ancient two-lane bridge (ka-thump ka-thump ka-thump) at 45 mph
On an interstate at 75 miles an hour during a thunderstorm (no traffic, it was early in the AM)
In a parked van we were replacing the interior in.
In a parked ambulance during a hurricane.
On a washing machine (love spin cycles)
On the top of a double Ferris wheel while it was moving (I knew the operator, and no it wasn't with him!)
In several swimming pools, including my own.
On the beach... several times.
The one time we were busted - by cop friends! - in a Ford Fairlane at midnight at a place called Alligator Park - for good reason (why we didn't go outside the car)
At a drive in movie (several times)
At the end of a dead-end road while we were turkey hunting
Here's the worst one - pregnant in a motel room - with my inlaws on the next bed.
(She never liked me anyway)
BTW, before the OP/shrink starts to freak out and analyze, all of these were with my DH of 29 years...
He was a VERRRY randy, bad boy when we were younger... I of course was merely an innocent coerced participant 'in love'.
Those exciting days are gone, but we are still in love and the memories are good...