When it takes you two days and four restarts on the laptop to get through the whole thread, just to read if someone else wrote what you are thinking, and still have something witty to post.
When you start thinking of getting off facebook because you have all the friends you need right here at HBT.
When your son grabs his friends hand and says "No. That's daddy's beer." when playing near carboys.
When your wife exits the room when your best friend from FL calls with questions about how to keep his carboys cool until his fermenting fridge is ready to go.