my pet hate - CD's or the like
DS1 the other day wrote in a thank you card, and I quote: Hope yoar' well
In his defense he is only 5 (y1) but shows how the misuse of the apostrophe rubs off on one so young - he knew there was one in there so stuck it at the end of the word! (I am ignoring the spelling btw - we are still on phonics )