Okay, this really happened to me, because I couldn't possibly have made it up.
I'm walking a customer through the process of setting up his email. In the middle of his email address, I get to the dreaded "AT-SIGN" (@)
ME: Okay, now type the AT-SIGN.
CU: The what?
ME: The little thing above the two, that looks like an a with a circle...?
CU: The two?
ME: No, no ... the thing ABOVE the two. The AT-SIGN.
CU: It just keeps typing a "2".
ME: Well, you have to hit the "shift" key
CU: (pausing a minute) Nope, it's still just typing 2's.
ME: (patiently) You have to hold down the shift key AND hit the number two at the SAME TIME.
CU: (light coming on) OOOHH! You mean like a
CAPITAL TWO?!?!
ME: (momentarily dumbfounded) Uh, yes. That's it. The Capital Two.
CU: (annoyed at my stupidity) Well, why didn't you just say that??!!