You've got to see online video of a pair of portable toilets, Porta Potties, Honey Buckets, whatever, get picked up off the ground and one be wildly tossed into the air by strong gusts of dust devil-like breezes in Colorado. One is seen skidding leaving some kind of mark before crashing into parked cars as helpless bystanders watch.

The other goes fully airborne before crashing. Look closely as the contents of the airborne Honey Bucket give the landing area a good golden brown shower. Nobody was hurt but a huge mess left quite a stain behind. Can you imagine someone actually being in there? Would it not totally catch air if there was enough weight to keep it grounded?