People forget the historical context. Jaws was the biggest thing since Ben Hurr sliced bread at the circus. Sharks were a very hot item. They were on every cool kid's lunchbox and those fish tank fish terrifier things with the shark head on a stick and you shove it into the fish tank and pull the trigger and it makes the shark's jaw move. Those were popular. I always thought they were kinda mean tho.
Point being it was that or Mr. C having a martini too many and finally flipping his shit over dinner. "You live in my house. For free. You eat at my table. For free. You make fun of me with my wife because you think I'm a square? I'm breakin' my ass sixteen hours a goddamn day in that hardware store while you're hanging around the house with the womenfolk, you goddamn pansy! But hey. I'm cool too. I'll prove it. I'll give you until I can get my five iron out of the closet to get the fuck out of my house. And if you say ayyy one more goddamn time, so help me God, I will kill you where you stand with my bare hands, you scrawny sawed-off Itey bastard."