Is there someone out there who has Steve Bedwell's "M.D. Not Required" and is willing to look up the name of the guy he credits for the balloon swallow?

And/or does anybody have an earlier credit for it?

Travis

Kevin Smith. It is called "Tonsils Tickler". I don't know if he was the originator. But it sure became popular for a short time in the late 1990s after it was released.