Now his ass should be fairly red at this point, but you're not done yet.
In fact go ahead and tell him "We're just getting started babe"
Grab the large spoon or fork (if its a fork make sure its not too sharp and be sure to hit with the rounded area or the side if noise is an issue.)
Give him 20 on each cheek. Make him count this time, and if he loses count or forgets to say thank you at the end then start all over.
(At this point there again may be some groans, but remember you are combining minor pain with very intense sexual pleasure. The sensation (as you'll find out in part two) is very confusing but its also very enjoyable so if he hasn't used the safe word by this point it means his body adjusted well to the feeling and you can probably turn it up a notch.)