baboomba - a sky monster that swells up like it just drank a gallon of

a sky monster that swells up like it just drank a gallon of soda and is about to throw a tantrum

That cloud looked like a baboomba, and sure enough, it rained buckets.

I was walking to school when a baboomba appeared and scared me half to death.

My teacher said the sky was a baboomba and we had to stay inside for lunch.