Seriously, there are tons of comments from people who are genuinely upset thinking that Mickey D's is robbing them of their hard-earned dollars. Please don't be outraged. Sure, there isn't that much of a size difference between medium and large, and the best way to judge it is by ordering your ice in a separate cup to get the most bang out of your fountain drink buck, but the sizes are indeed different.

Whether or not it's worth it to you or if drinking that much soda with a meal is good for you is another conversation entirely, however.

UPDATE: For everyone who doesn't understand volume and thinks that because the ice in the cup in my video played a factor, I did the same thing with plain old water and no ice. See the results for yourself.