For the record:
Your = possessive pronoun
You're = contraction for you are
Your're (yes, I've seen this variety) is never correct.
When I was dating Stan, I invited him to Preference (it's a girls' choice dance). In answer, he made me something like this*:
And I still married him. Even when my English major roommate forbade me to see him ever again. Believe me, Stan knows the difference now. Not only that, but he's a published author of one boring dissertation and a non-fiction book for military families out this fall. Now he corrects my grammar.
What words do you routinely mess up? A to Zers, we're almost done!
* note recreated using Ransom Note Generator.