I'm happy I haz you.
Available at: MimosaCards http://www.etsy.com/listing/57201344/cheeseburger-cat-im-happy-i-haz-you-set ($12 for a set of 10)
If I got one of these cards my day would certainly be brightened. What a cheery little crew of friends! Thanks anonymous future friend for sending me a note!
Via: I Heart Chaos http://www.iheartchaos.com/post/1039378836/fun-japanese-thing-of-the-day-the-japanese
He doesn't really look like he wants you to have a nice day, but the sentiment is there.