An any time of day activity you can enjoy with the person of your choice, preferably after some brazilian waxing.
Greg-O: "Chuck!! Where the hell have you been?"
Chuck: "Oooooooo. I been home havin some butt naked fun with my old lady!"
Chuck: "Oooooooo. I been home havin some butt naked fun with my old lady!"
by Princess of the Pirates May 19, 2005
Get the butt naked funmug.