Guy: I totally shit my pants yesterday
Other Guy: Why?
Guy: Weegee popped out of my lunch box and stared at me
Other Guy: Do you have Weegeeophobia?
Guy: I guess so
A way to express yourself uncontrollably with joy without context and in a gibberishway that all anyone will understand.
Using the sentence as a Genshin player: OMG weeweewoo I got Zhongli and it wasn't guaranteed!!!!
Casual sentence: weeweewoo who's a good doggy? aaaah! it's soooo cute!!!