I had a poll going on for a while, and now it's officially closed. I realized that the first to options can be interpreted the same way, but it was too late to change it because someone already voted. Here are the results:
WHEN YOU CALL SOMEONE A DICKHEAD, WHAT ARE YOU REALLY TELLING THEM?
They have a dick for a head 16 (50%)
They have a dick instead of a head 10 (31%)
They're the head of a dick 6 (18%)
The first one was supposed to be "They have a dick on their head," which is totally different from what I actually put, and it makes me wonder what my problem was that day.