Ahh yes, nothing like innuendo. The options are limitless thanks to the Euphemismator. The first one I got:
With a crowd of observers forming, the couple was rolling in the hay with the Subway sandwich.
And with the intro locked:
With a crowd of observers forming, the couple was shooting the Lincoln log.
If you’re looking for a more pertinent euphemism generator, why not follow the National Review’s lead in extrapolating on the new Overseas Contingency Operation! Yay, reality!