There are indeed disciplinary occasions, you see, when the standard over-the-knee position for blazing the butt of a naughty, errant brat is not quite that effective. Therefore, adding in more embarrassment and ass exposure into the mix will often assist in getting your message across more efficiently.
This blogger did some, errm, research on this tushytastic topic and found several examples from the fine producers over at SpankThis, who specialize in the discipline, and bare ass embarrassment, of naughty tight-ass twinks. Perhaps these posterior punishment pix may give you some ideas and inspiration, I hope. Enjoy! [Curious which image you like the best and why?]