arfagaulen
Overheard/misheard at Chesington World of Adventures. The guy who said it was from then on referred to as arfagaulen. Arfagaulen is a word used to replace words that one does not understand/has misheard.
Jim: "Wow look over there its a hrrawgomalnessy!"
John: "What did he just say?"
James: "I think he said wow look over there its an arfagaulen!"
John: "What did he just say?"
James: "I think he said wow look over there its an arfagaulen!"