Guys suck hazom in the classroom"

The story:

It was about 1978 or 1979 and the song that was the rage around our school
was "We Don't Need No Education." The kids loved it and the teachers hated
it, of course. I remember a friend of mine looking at the lyrics, which either he
or someone else wrote down.

Now, I'll admit I was extremely nerdy, still am, in fact. I never listened to KISS or Pink Floyd or any other of the hot rage music back then. I just listened to whatever fogie music my dad used to play on Saturday night. So I had only heard "We Don't Need No Education" when some kids at school were singing it. When they came to the line about what was in the classroom, what they sang didn't sound like it made much sense, so when I saw my friend reading
the written lyrics, I asked him "what is that about 'in the classroom'?" He helpfully replied "guys suck hazom."

I thought "Guys suck hazom? What the heck is 'guys suck hazom?' What is
hazom, anyway?" I had absolutely no idea what he was talking about, nor
had I any idea what made up "hazom." I thought that it was me. I didn't
get it because I just wasn't cool enough, like the rest of the kids at school.
I thought if I listened to that kind of music and not Dean Martin, Perry Como,
Johnny Mathis or any other of my father's stuff, then I would be cool and I
would know what "hazom" was. So I went through the next several years
thinking that the line in that song was "guys suck hazom in the classroom."

A few years ago my cousin mentioned Pink Floyd, that he was a big fan. That
old lyric popped up to bug me, so I asked him what the line was. He said "Dark sarcasm in the classroom." At long last, after 18 years, that line finally made sense to me. Well,
sort of.