I remember my skinny, somewhat pinched in-her-late 50’s calculus teacher drawing perfect huge circles on the blackboard in less than a second, using her double-

I remember my skinny, somewhat pinched in-her-late 50’s calculus teacher drawing perfect huge circles on the blackboard in less than a second, using her double-jointed shoulder as the pivot. I had been warned about this by my buddy who hah had her for trig.