ALT An XKCD cartoon. It says "I try not to make fun of people for admitting they don't know things, because for each thing everyone supposedly knows by the time they are adults, every day there are on average 10,000 people in the US hearing about it for the first time. If I make fun of people I train them not to tell me when they have those moments, and I miss out on the fun." It then has two cartoon figures, one saying "Diet Coke and Mentos thing – what's that?" And the other replying, "Oh man! Come on, we're going to the grocery store – you're one of today's lucky 10,000."