Speaking of tippable or untippable in relation to outhouses, my father-in-law used to recall the dear old days of yore when the night before Holloween was called "mischief night" or "moving night" when all the youths in a neighborhood would participate in pranks such as unfastening the neighbors' gates and pitching them on the porch roof, taking away the ashcans, and tipping over outhouses, of which there were still plenty in back yards even in the city. They apparently used to get away with stuff that would land modern young people in reform school.