Findings:

• If you're happy and you know it clap your hands
• If you're happy and you know it click this node
• You know you're from Prince Edward Island if...
• You know you're blacked out when...
• You're the only one who doesn't know
• Nobody Knows You When You're Down and Out
• if you buy into the wizard's bullshit, soon you're all standing waist-deep in things you didn't even know could exist and no one has any clue how to stop him
• You're one of those people who knows all the words to every song, aren't you?
• 50 Things You're Not Supposed to Know
• You Know You're Right
• I know you're cute no matter how many layers of abstraction you hide behind
• i know you're out there; i just wish you were here with me
• You're not a good person. You know that, right? Good people don't end up here.
• If you don't know where you're going, any path will take you there
• You know you're in the SCA when
• You know you're a geek when...
• You're not going to be happy until you put someone's eye out
• I'm sorry I was speeding, officer, but I really have to get to the hospital
• On the Internet, nobody knows you're a dog-rose
• You're a poet and you don't even know it
• You don't know what you're missing without me
• You wouldn't know it, but I think you're achingly beautiful
• If you're insane, how do you know you're insane?
• You know you're in a terrible mood when the songs don't work
• I know you're up there. I am but a discontented symbol birthed from the blood of your terrible pen.
• That's why you're a good parent. You know all the cliches by heart.
• She's waiting to tell you if you're ready to know.
• On the Internet, nobody knows you're a dog
• Things to know if you're marrying a Catholic
• I hope you're fucking happy
• The hole in the ground for bodily waste when camping
• no island, but you're not a big happy archipelago either
• Claps
• clap board
• Old clap
• communist clap
• clap hands (user)
• Homer Clapp
• She really does want to clap along, but at the same time she doesn't want to let the bird get out.
• Verner Clapp
• Clap Your Hands Say Yeah
• nerd clap
• clapp (user)
• Don't clap too loudly; it's a very old world.
• Tim clapp (user)
• hanged
• The Hanged Man
• hang
• hang up
• 1, 2, 3, hang up!
• Hang up and DRIVE
• I can hang out with guys without fucking them!
• Things that hang from people's mirrors
• She Hangs Brightly
• Sit Down, Shut up & Hang On!
• You speak like who you hang with, and piece like who you paint with
• hang the DJ
• Hung vs. Hanged
• Hang On To Your Ego
• a place to hang out
• Hang On
• hang ten
• How unlike tomatoes your testicles hang
• Dead hang
• Do your ears hang low?
• Hanged, drawn and quartered
• Hang a Roscoe
• Hang a Louie
• She is the tear that hangs inside my soul forever
• Hang Time
• hang dog
• Hang 'em High
• Thanh Hang (user)
• Hang On To Yourself
• "I love you" hangs in the air like a subtitle
• A rope to hang her, mother, a rope to hang her
• They can see that you're missing something inside
• Hang the Pope
• My old clothes hang on a chair like ghosts of people I've been
• Before They Are Hanged
• hanged in the attic
• The Sometime Pilot Hangs It Up
• Happy Rhodes
• happy
• Happy Fun Ball
• Happy Noodle Boy
• Happy Meal
• Get Happy!
• Happy Days
• Happy Hardcore
• Happy Valley
• Whatever makes you happy on a Friday night
• Happy Gilmore
• happy ending
• Am I happy?
• Happy Hacking Keyboard
• happy hacker
• Happy Meal Toys
• Happy Accident
• Happy Labor Day from Insomnia Boy
• Happy Birthday
• Happy Talk
• Happy Franks
• Happy Mutant
• Happy New Year
• Happy Birthday to You
• Mr Happy (user)
• Necessary to a happy childhood
• happy face
• happy voting
• Happy Hour
• Mr Happy
• So... what do we do now that we're happy?
• happy as a clam
• Happy Kerpuffle Fluff
• Children who are born blind still smile when they are happy
• I'm so shallow, a new t-shirt makes me happy
• Happy Mondays
• A few fries short of a happy meal
• Happy Canada Day
• May you spend a happy life untroubled.
• Found: one slightly damaged happy meal toy
• Happy and Bleeding
• Happy Meal Special
• happy stick
• The vanity of a woman demands that a man be more than a happy husband
• Oven potatoes made me happy
• Happy Birthday, Wanda June
• happy hunting ground
• So happy she drools
• Happy Flowers
• How to order a Happy Meal without embarrassment
• Happy campers
• As if either one of us were happy
• Happy death day, Friedrich Nietzsche!
• Happy those who with a glowing faith in one embrace clasped Death and Victory
• Legal Happy Pills and their Trials and Tribulations
• happy trail
• Trigger Happy TV
• Is that massive cerebral hemorrhaging, or are you just happy to see me?
• Happy Waitress
• In the Happy Isles
• Shiny Happy Noders
• Things on e2 other than XP that will make you happy
• The Happy Hocky Family
• Happy endings are not our birthright.
• happy horse shit
• happy jason (user)
• Happy leftovers!
• I think people would rather be happy than virtuous
• Someone's gotta do the happy
• Many Happy Returns
• Happy Holidays
• Happy Mask
• Happy Discover Card! er, ..I mean New Year!!
• A Happy Life
• The Song of the Happy Shepherd
• The Happy Wanderer
• Beer is proof that God loves us and wants us to be happy
• Happy birthday, Mr. President
• The Happy End
• The Happy Warrior
• These Happy Golden Years
• The Happy Thought
• I Just Want You To Be Happy
• Happy Nation
• Happy Boys And Girls
• Happy Hacking Keyboard Lite 2
• Happy Trails

If you Log in you could create a "If you're happy and you know it, clap your hangs" node. If you don't already have an account, you can register here.