Sadly enough making love in a dumpster isn't so uncommon. Well, making love IN the dumpster is, but I know quite a few young ladies who have stooped as low to have sex behind dumpsters. Plus in cars, on the sides of houses, stairwells, the library for christ's sake. Personally, I've only done the deed on my bed, and someone else's floor. Perhaps I'm not adventourus enough? ...Or do I just have self-control?
Anyway, no matter where one was making love it would be might unpleasant to be robbed. From one of the greatest pleasures in life, to losing your valuables and dignity. Weaksauce.