Recently on a midterm I took, half of the test was multiple choice. Midway, i'm there happily filling out the bubbles (because I love bubbles), and suddenly BAM I get 6 D's in a row. My first intuition is that it's right, but on second thought I think that there was no way the random answer thingy would have chosen six D's, so I spend half an hour sitting there like a idiot regoing over each multiple choice question hoping I overlooked someone. In the end, I ended up changing two of the answers because it looked better on the scantron, and I like my little bubbles all evenly spaced out.
AND THEN, ON ANSWER KEY, THE ANSWER WAS REALLY 6 D'S.