I have had the name badge of an Australian colleague for a couple of years...

...Occasionally I go into restaurants around town while wearing the name badge, demanding that the greeter shine my shoes with their tears. When they refuse I shout "Don't you know who I am? I'm Colleages Name!! Nobody says no to Colleagues Name!." in a horrible Australian accent.

I've also informed him on multiple occasions that here in the states when a greeter asks for a name, it is customary to provide both first and last names.

I know it's a long shot, but I hope very much that some day while he is in town he will visit one of these restaurants, and when the greeter asks for a name he will say his first and last name. The greeter will look down quickly at the no serve list and ask him to leave.

He will be confused, and I will laugh.