If you happen to visit Qwest field in the future take note of this video. For $1.25 more you can get yourself a “large” beer which at first glance may appear to hold more liquid, but in actuality the glass is just taller and thinner than the smaller glass creating the illusion that it is holding more liquid, but they both hold the same amount. I wouldn’t be surprised if this were true for most sports stadiums so next time you’re at a sporting event or a concert check to see if the large and small cups hold the same amount of liquid and, if you remember, leave us a comment with your findings.
(The original post also linked a YouTube clip: https://www.youtube.com/watch?v=1xSDI9Gg63I, still findable if it survives this long.)