The Difference Between a "Head Shop" and a "Smoke Shop"

As you may know by now, I'm originally from San Francisco and currently living in Pennsylvania, and I must admit my confusion when I came out here and people started talking about going to a head shop. What the hell is a head shop? I know we've got smoke shops - they sell cigarettes, hookahs, shisha, bongs, bubblers, grinders and the like, but certainly no heads. I had never heard the term before. Anyway believe it or not I did a little research, and it turns out head shops got their name because I guess they cater to customers who like to alter their state of mind, or head.

It was not until I stepped inside one of these stores that I realized there were some other differences too. This shit was fucking expensive; a $200 bong at that store would've costed me maybe $120 back home. But you know they never have the prices on these things, or they're in some other language or some shit, so I had to ask what the prices were... that's when I made my first mistake.

"Excuse me, how much is this bong right here?" Any of you who live in one of these ridiculous marijuana-law states know what comes next, but I sure didn't. She kicked me out of the fucking store. I wasn't going to buy the ridiculously overpriced bong anyway, but seriously? I can't say bong? Fucking head shops....

This is a smoke shop

And this is a head shop 

See that's just bullshit. They know, I know, and everyone seeing me walk into one of these stores knows exactly what I'm going to do with these "items" when I get home, and it damn sure isn't to smoke tobacco. Whatever. I  knew the girl was just trying to do her job so I tried not to give her too hard a time on my way out, but I damn sure haven't been back. How dare someone tell me what I can or cannot say? Isn't this America?