Who says romance is dead?

Port-a-potties are scummier but too small to shoot in.

You could mix in elements of Midnight Prowl by using a toilet at a porn shop. You drag the whore into the store by the scruff of her neck, ask the clerk where the toilet is, and drag her there for the deed. Too expensive to do regularly, but maybe as a one-off shoot, titled "How to Express your Love and Affection for your Babe".
_________________________
"If they can't picture me with a knife, forcing them to strip in an alley, I don't want any part of it. It's humiliating." - windsock