the shower

A good time to spank him is when he is just out of the shower.
a recently wet bottom certainly feels the spanks even more than usual

or maybe while he is in the shower
but if he is taking a bath, there are ways to get him out of the baht quickly
first the hand
but the purpose is for his bottom to be sore, not your hand, so a paddle will be very effective
but if you get tired standing, sit down
and continue the spanking
However,  sometimes, she needs to be spanked while in the shower

bottoms up
Red