Apostrophes

(Cartoon by William Haefeli, May 2, 2011, The New Yorker)
Regular readers of this blog know that I have a lifelong inability to correctly use the apostrophe* in the word "it's." Those who read my published work have no idea how much credit I owe to good copy editors. I have, after 48 years, given up. (I'm sorry Mr. Frost and every other teacher since fourth grade) I now try to only use the phrase "it is."
Excuse this non-philanthropy-related indulgence but I need to share this cartoon with the grammarians among you (whom I adore and thank). It is hilarious.
*I found the photo on the blog apostrophecatastrophe. Gotta love the Internet!