A Who Hasher is a close friend who has that one side of them they only show to you and other close friends. Its their wacky, cocky, moody sides that usually come out after dark or if the whole friend group is together at the right time. Being a Who Hasher brings out the best memories of people that make great stories to tell.
Person 1: Hey how was the party last night?
Person 2: Yoo, last night was sick OP was being a Who Hasher all night long!