yumdiddlydum is the amazing feeling when you rum your tum and bum on the run from the dum dums
a: oh nuuuuuuu, we r being chased by the coppy cops :(((((
b: here, have some gilly juice
a: YUMDIDDLYDUM OK LETS RUN
This is the best form of a compliment you could give someone. It compliments not only their body and personality, but also their ability to be a total ZUCC. Honestly, saying this to someone is better than saying I love you.
Oh my gosh, I love you toooooo!!!!!!