This decadent procedure requires two people. You start by having one person invert his or her anus and pull out at least three inches (the more the merrier) of inside-out colon. The other partner then forcefully grasps this handful of chocolate flume and injects it with botox, causing it to become firm and rigid. Once this is done, the other partner can proceed to vigorously insert this hardened mud tube into his own, thereby simulating a french kiss.
If you really want to liven things up, both partners should be sure to take a few laxatives before beginning.
Matt: "Hey Chris, since we are flaming homos, how about a Bulgarian French kiss?"
Chris: "I was just thinking the same thing! Good thing I just took an entire bottle of laxatives!"