Naked on back diaper position for many implements

Merry says, "I often have him get into diaper position, with his legs straight up in the air, him holding them with his hands on his knees. In this position, I have easy access to beating his cheeks, his sit spots, his upper or lower thighs, and by having him spread his legs, I can use a cane in between his cheeks.  My gosh, how he squeals when I do that!"