My husband is a big Howard Stern fan and he has this video which features "Butt Bongo." Howard calls members from the audience to the center of the stage and then the men beat the girls butts like they are playing the bongos in a very public setting. I included two couples here and I especially like the second couple because you can tell they practice spanking in their private lives. There was a few other couples not included as to save time but these two are my favorites.
A quick clip of my husband playing bongos on my butt the traditional way.