Best definition
a exclamation of excitement typically said after or before doing something monumental, funny, or entertaining. can also be used as a catch phrase.
allison: you ready for basketball

kwame: ye

allison: imma score. wawoom!
wawoom: define #2

Not just exclamation!

Wawoom can be used in practically any situation!

You know wawoom is real because it even has a cringy version for non-believers; “wewoom!”
Wompa: Mom, my fish died. And my geetair broke while I was playing stairway to heaven.

Shan: Silly goose! It will be okay! Wawoom!

Wompa: That made me feel a lot better. Thanks brutha.