My mum volunteered in the tuck shop (canteen for those non-Aussies) when I was at school and was always appalled when kids would say, "Can I have two of them donuts" or some such thing. Her response would be "two of those". My friends will vouch for my nazi-ism on the same topic - just one of the many good habits I picked up young.
Though I sometimes get lambasted for grammar on this blog (usually when I'm using some crazy foreign keyboard where the keys are all over the shop), I am a stickler for the correct usage of apostrophes. Such a stickler in fact, that I boycotted a cheap shop at the local shopping centre because its name is "Whats New" (well, until I needed some cheap paint supplies for a certain art project I undertook).
Which is why I had to giggle at this:
Yeah, I'm a bit of a nerd sometimes.