"same difference"

what the fuck?

and these two... it's not so much the sayings... as how they have been bastardized by people who just say/type them without thinking about what they are actually saying...

"I could care less"
so you must care to some unspecified degree? possibly lots?
(see also "I could give a fuck" etc)

"your stupid"
if you're going to insult somebody's intelligence then you should try to avoid looking like a fool whilst doing it!

you're stupid (as in 'you are'). 'Your' preceeds an object belonging to the person you are speaking to... you can be a 'stupid fucking dick head' but you can't own one... not unless you keep slaves!

Look around Facebook and these very boards and see how many people don't know what 'you're' means... it's getting ridiculous... I have teachers on facebook and even they struggle.

'Your' ladies and gentleman - the one word in the English language that gets abused more than an unwanted Ginger step child.