We had this with a school... ordering over a 1,000 shirts and then show up with an already packed car saying "oh, this is more than I was expecting."
To be fair, I printed up 2,000 shirts for an event I was going to be attending and it dawned on me right as we were about to print... "how the hell do I plan on getting all this there, plus all my gear?!" Luckily there was an 18 wheeler already headed there that could swing by and pick them up.