Listening to Coast to Coast last Thursday, George Noory reported Donald Trump left a waiter $10,000 tip on an $82 bill. The story was a hoax that was also reported on by other news sites. Fact checking/shmack-checking. Maybe Noory reported the misnomer--I haven't listened to any of the following shows.
Here it is on Snopes: http://www.snopes.com/luck/trumptip.asp