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A crazy mix of hella and hail that happens when the sky throws a bunch of ice balls at you like you owe it money.
"Hailla! I'm gonna die in my shorts!", Dave, during a storm on the 405
"This hailla is worse than my ex's texts.", Lisa, watching her car get pummeled
"I was walking to class and got hit by hailla. Now I'm late and wet.", Jake, in the middle of the school yard