Some people don't have a backyard. I can try things out in a public parking lot, I guess, but starting a fire or making a shelter there might get you weird looks at least, and possibly a trip to the police station. I can just imagine --

Police: "What's going on here? Why are you hiding between cars?"

Me: "I was looking for ASSS, but I got nothing. These old guys on the internet tell me I should do it by myself. So I'm just trying different things here -- condom in a sock, rubbing the stick really fast, lying low under the lean-to so people can't see me..."

Police: "You have the right to remain silent..."