An undergrad business student enrolled in the Haas School of Business at University of California, Berkeley, who exhibits many negative characteristics that allow themselves to be labeled as 'douches' or 'assholes', hence the name Haashole.
They are normally arrogant, cocky, full of bullshit, talk loudly about vague things, incoherent, and think they're so great for getting a business degree.
Hashyellow's are basically elite hashbrowns, like hashbrowns they also come from the hash tree,but the ratio of hashyellows to hashbrowns is 1:2 billion. In simple terms, they're rare as fuck.