nostrils flared - neighbor horse - napa, ca
seriously. nothing irks me more than grammatical error--no sort worse than the misuse of your and you're.
e.g. your mom has fluffy hair.
you're=contraction of the words you and are
e.g. you're an idiot if you don't know the difference between your and you're.
so next time you consider writing a card or a facebook message, take a split second to consider the difference. would it make sense to say, i hope your having a great summer? no, it wouldn't.