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.

In your scenario, would you actually be ok or understanding if the "angry officer" made an example of you for this harmless joke? Or would you maybe protest that it was a bit disproportionate or unnecessary?

And finally, hearing people say "jokes are dangerous" in a serious manner makes me very sad for our society. The level of unconscious mass conformism seems to be growing fast, and historically that never leads to good outcomes.