I remember a certain instructor cleaning out Ozzie's waiting room with half a canister of BOC De-odour-gas. with a sleeping Betty getting most of it squirted up her dress! or
When Ozzie asked me to paint feet on the scales so the locals would stand on them properly. I did, PT. Keats style...3 toes on one foot and 6 on the other. He didn't see the humour in it!