Trust me on this one, go to uncookedland and check out these hysterical cards. It's everything you always wanted to write but couldn't because it would be too creepy in your own handwriting.
One of the "Sorry" cards reads:
I'd Rather Jam Dried Fruit in my Eye Sockets Than Have You Stay Mad at Me
A "Miss You card" reads:
Some mornings when I really miss you I cry into a bowl of cereal and eat my tears.
Thanks to the reader who sent me this link!