The letter of the law is that he presented a counterfeit ID to a federal officer where lying to a federal officer is a very serious offense.
You can argue that 'well it was a joke!!' but if you were to joke around to your nearest FBI officer about how you have a bomb in your home and you're going to use it I imagine they wouldn't find it very funny.
> if you were to joke around to your nearest FBI officer about how you have a bomb in your home and you're going to use it I imagine they wouldn't find it very funny.
Agreed! Joking about a bomb is a much more serious and very different situation than showing a joke ID in a relaxed situation - and when you probably have your real ID in your pocket.