Moved to new park last week. As I was getting everything hooked up the wife was talking to me about something. Anyway, got all squared away and jumped in the truck to go get some things at HEB. Decided that since it was handy now would use the restroom. Shut off the truck and went inside. Hmm no flush on the toilet. Hmm no water at the tap. Then it hit me -- had the hose on the black tank flush. Lessons learned: 1). Never pay attention to the wife -- especially when setting up. 2). Don't let her give you any trouble about extra trips to the john.