for videos and activities. Looking for lyrics. Turn on closed captions to sing along. Big thanks to all of our fans out there, big and small. Traditional. Arranged and adapted by Sockeye Media LLC © 2014. All rights reserved. Lyrics:. If you're happy and you know it, clap your hands (clap clap). If you're happy and you know it, clap your hands (clap clap). If you're happy and you know it and you really want to show it. If you're happy and you know it, clap your hands. (clap clap). If you're happy and you know it, stomp your feet (stomp stomp). If you're happy and you know it, stomp your feet (stomp stomp). If you're happy and you know it and you really want to show it. If you're happy and you know it, stomp your feet. (stomp stomp). If you're happy and you know it, say "Hooray!" (hoo-ray!). If you're happy and you know it, say "Hooray!" (hoo-ray!). If you're happy and you know it and you really want to show it. If you're happy and you know it, say "Hooray!" (hoo-ray!).