One time I'm in the Dr's office in my jocks, he says "Stand on one leg with your eyes closed."
OK, no worries.
"Now crouch down."
A little bit wobbly, but OK.
"Now hop across the room."
I do the best I can, wondering if he's going to tell me to bark like a dog next.
"Ok you can open your eyes and get dressed now."
I say "That hopping across the room like a duck thing was a joke you made up, wasn't it?"
Dr doesn't crack a smile, apparently it was fair dinkum.
Never run across it elsewhere though...