Woohoodies is a term that describes the great feeling of fortune and divine intervention one gets the moment they step outside and it happens to be raining. But fortunately, they happen to be wearing a hoodie or some other article of clothing that has a hoodie attached to it. The term is usually yelled out loud as one experiences woohoodies.
WOOHOODIES! said an awesome person right after the realization that even though it was raining his day would not be ruined because he had a hoodie on.