For Fun/Excitement:
* Woohoo!
* Yeah!
* Booyah!
* Huzzah!
* Ahoy!
* Let's go!
* Go team!
* Yippee!
* Shazam!
For Celebration:
* Congratulations!
* We did it!
* High five!
* Cheers!
* Victory!
For Warning/Attention:
* Look out!
* Watch out!
* Heads up!
* Help!
* Fire!
* Stop!
For Humor:
* Banana!
* Squirrel!
* What's up, buttercup!
* I'm rubber, you're glue!
For Enthusiasm:
* Awesome!
* Fantastic!
* Amazing!
* Incredible!
* Way to go!
The best thing to shout depends on the context and your personal style. 😄