Where can you buy a book of email stamps?

I've blogged about how funny it is when older people use their old slang words to talk about new ideas or technology, specifically the all-encompassing word for drugs, dope. Two weeks ago I was talking to my friend's dad about another one of our friends who is apparently doing 'dope'. It was only after about fifteen minutes of talking that I realized he was talking about popping pills and not coke, heroine or weed. Parents are funny about slang that way.
But what's even funnier is the way older people use new technology. They can't get over the fact that it's nothing like the equivalent of the technology they used to use. Take the cellphone for instance. The other day I was sleeping and my dad called me to let me know I had left the lights on in my car. "This is your Dad. You left the lights on in your car. I repeat, you left the lights on in your car." I guess he thought he was on a walkie-talkie or something. The only thing he was missing was, breaker 1-9, do you copy.
And it's funny because if you have the slightest idea about a certain technology then you're automatically an expert on it. Because I can maintain the simplest of computer tasks—an email account, a website and a blog—I'm some kind of computer genius to my mom. I don't know much, but i can do the basics. She always comes to me as if I know everything about computers. I've become the designated I.T. guy at home just because I know that you don't need stamps to send an email and a guy with hot pants on and a mailbag isn't coming to pick it up.