In the very first episode where Arnold's bully was referenced, Mr. Drummond mispronounced it as the "Girch." Funny stuff. I love when sitcoms incorporate unseen characters into storylines, such as Norm Peterson's wife, Niles' Crane's wife, Tim Taylor's next-door neighbor Wilson, Al Bundy's mother-in-law, and Howard Wolowitz's mother. The Gooch is my favorite, I guess because of how hideous looking he's supposed to be. No shade to the other sitcoms, but being fat and unseen is just lazy writing.

I don't remember those details but the name Gooch rings a bell.
You are right about that line.
The days of ugly shaming as a joke are gone.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

That catchphrase completely overshadowed Willis' "Run that by me again" which Arnold also said when the Gooch first asked him to take out his sister. Just the puzzled look on Arnold's face as he said that, was laughable in itself, as well as originally with Willis. Although, I love when Arnold said "What'choo talkin' 'bout, Will?" to Will Smith on the series finale of "Fresh Prince" ten years after "Diff'rent Strokes" was cancelled. Second place goes to the "Romeo & Juliet" episode of DS where Arnold said "What thou talking about, Juliet?" to his nemesis, Lisa, who got stage fright at the school play and didn't say the right line to Arnold. EPIC!

Whatchu tawkin bout, DaGee!