I was a stupid child. I once got confused while watching a news item about the ratings war between Dallas & Dynasty, and for many years I believed that someone from ITV (who aired Dynasty) had shot someone called Larry Hagman who worked for the BBC.
When Tim Burton's Batman came out, for months leading up to the release I could not figure out what the bat sign was. To me it looked like two sets of bunny ears. Turns out I was looking at the yellow bit, instead of the black bit. I don't know why it took so long to click.