You saw this post.
You know how to pronounce diacetyl.
You know more beer styles than you have ever sipped on.
You can argue the between the difference between an Ale and a Lager.
You call a Turkey Fryer a Boil Kettle.
You walk by a cooler and think, "How efficient can I make this into a Mash Tun?"
You buy beer based on how nice the bottle is.
You drink a beer by checking for haze, smelling the beer prior to sipping it, staring at foam like it is a wonder from god, and asking what hops are used? Asking yourself what base malt was used? Asking yourself can you clone this? Then getting your cell, tablet, laptop, or desktop to look it up to see if you were right on any of the previous.
You have brewing software on more than 1 device.
You book a vacation then you look up what regional breweries are near by.
You own more than 1 book on beer.