The choice for today, because too many day shad passed, was the long tawse for 12, and the teacher's flexible cane for 11.
Bottoms up, with my midsection on top of three pillows to make a very prominent target.
Each stroke of the long tawse had my feet jumping and jerking, with a pause between each stroke for my feet to settle down, and my bottom to pause it's gyrations and clenching.
I experimented by looking back with one eye at the arm motion, but stopped doing this after two strokes. Unless you have your head completely to one side, it was not possible. In addition, looking forward and downward, you can still sense the movement as the tawse swings towards your bottom.
Wow! Those twelve strokes were intense.
"Now, we should use this wonderful cane that your friend Ronnie sent to us...."
This wonderful (??) cane is very whippy, and it had me yelping and feet jerking with each stroke. Only eleven this time, but one more for good luck...