I bought my dad a Kindle Fire for his birthday, and it's probably the first time he has browsed the internet unrestricted. (His Work computers don't let him do squat)
He'll go watch a movie trailer on Youtube and get all excited saying, 'Oh look! They already have this movie available for free on this site! How do we go do that?'
When it's obviously one of those stupid spam comments that somehow gotten top comment. :/
My mom complains about how slow her computer is when she is the one with 100+ tabs open in Firefox along with PDFs and other stuff.
It's so bad that we get to the point that when I'm trying to help her fix something, and it needs to reboot the computer, she says, 'Nope, got too many tabs open. I'll lose everything.'
I also walked into her room once and noticed that she had put tape over the webcam of her tablet.... That tablet being an HP TouchPad with a port of Android 4.0 on it, which has a non-functioning camera.
Seeing the news that the Wii U's GPU is apparently 3-4x stronger than that of the Xbox 360, I said that it will have better graphics than the 360. A stupid 13 year old that I can't stand said, 'Haha no. That's not true.'
The same kid always blurts stupid shit like, 'No it isn't!', or 'You're lying. I don't *think* that is true.' It pisses me off to no end because I know what I'm talking about more often than not when I'm trying to tell kids this stuff.
People who buy iPhones only because it is more of a fashion statement rather than something they need or would use. This lady is a prime example:
My mom trashed a computer once and kept the fan thinking it was the CPU.
That's all that I can think of at the moment.

I've got so many of them, but those are the only ones that come to mind.