Ah! Another conspiracy theory! The concept seems to me to be highly unlikely. While pranks of various kinds are to this day perpetrated upon unsuspecting newbies and outlanders, and though some are quite ingenious, most require very little if any effort on the part of the initiator. In general the simpler the construct, the more believable it is. Creating a brand new "folk song" out of whole cloth cannot be a simple undertaking and therefore appears to me to be far too much effort for conspirators to spend time constructing. Besides, where is the payoff? If your collector believes it to be a real song then how do the conspirators get the satisfaction of a good laugh? No, I think they would stick with the simpler stuff like having someone fetch a board-stretcher or a bucket of steam or sending the newbie after some gasoline in a Styrofoam cup.