Who is Paul McCartney?
Who is Paul McCartney? In less than 140 characters, troves of Twitterers are digging themselves into holes by posing that question. In response to the musician's performance at the Grammys Sunday night, many an ignorant and shameful twitterer had to inquire who the former Beatles band member was.
Watch below for some of the highlights from very confused Tweeters, and the retaliation against them: