I took a bus many years ago from Rochester, NY to Toronto, ON. As ID for crossing the border, I only had my driver's license, not my passport, as this was allowed at the time. But the border agent was a bit grumpy about it for some reason. He asked if I had a birth certificate, and I thought I'd be cute about it and responded, "Sure, of course I've got one... but not with me! :D" He stared at me dead faced and just said, "Go over there and wait in line J". Line J felt kind of like "The group W bench" from the song Alice's Restaurant. I waited in that line for about 45 minutes for the new border agent to give me a tired look and then wave me through. The rest of the passengers on the bus waiting for me were not amused.