"It's easier to eat ice cream in a bowl--you have a side to hold the ice cream when you're cutting it with the side of the spoon."
Also, as it melts it's much more likely to spill off a plate than out of a bowl, and it's harder to scoop liquid off a plate.
"I probably caused some collateral brain damage when a friend told me he now lived in "Stockton, CA" and I took the state abbreviation to mean "Canada"... in my feeble defense, I'm from neither the US or Canada"
Here's one that regularly causes brain cramps at our workplace. There's a city in California named Ontario, so the postal address reads "Ontario, CA 91761". We pretty regularly have to deal with people who think that's wrong because this must certainly be referencing the province of Ontario in Canada and so it should have a Canadian postal code, not a ZIP code. It does us no good to point out that Ontario (Canada) addresses would read "(city name), ON M4B 1B3" to these people, and around and around it goes with them.