Folk Neuroscience: how inaccurate neurological concepts have become cultural staples.
posted by Scientist on Mar 6, 2013 - 52 comments

Que Sera Sera posts about "Weird incorrect facts from childhood that other people have kept in their heads without reconsidering until the moment it hits them." Lots of people are learning new things in the comments. Via defectiveyeti.com
posted by artychoke on Jan 12, 2013 - 625 comments

10 Misconceptions Rundown is an entertaining, fast-paced debunking of a number of commonly held beliefs. [SLYT]
posted by quin on Feb 4, 2012 - 82 comments

Army soldier, model, or zookeeper: an A to Z of What People Don't Get About My Job. [more inside]
posted by divabat on Sep 9, 2011 - 47 comments

Kinda sutra - a charmingly animated short in which people talk about childhood misconceptions about sex and childbirth. More on childhood sex misconceptions from Dan Savage 1, 2, 3. (pretty tame clip, but possibly NSFW) [more inside]
posted by madamjujujive on Apr 13, 2009 - 55 comments

Recurring science misconceptions in K-6 textbooks: CLOUDS REMAIN ALOFT BECAUSE WATER DROPLETS ARE TINY? Wrong! SOUND TRAVELS BETTER THROUGH SOLIDS & LIQUIDS? No it doesn't. GRAVITY IN SPACE IS ZERO? It's actually strong. THE SKY IS BLUE BECAUSE OF COMPLICATED PHYSICS. No, it's simple. And many more.
posted by vronsky on Oct 12, 2008 - 108 comments

NSFW: Childhood misconceptions about sex. Both the male and female (linked as this post's title). I found them quite amusing. In a similar vein, we also have I Used to Believe, which I think has been MeFied previously.
posted by five fresh fish on Sep 1, 2004 - 18 comments