If it's heavy, it can only mean one thing

I was born in the late 90s so could somebody please explain this to me?

I don't get it what item are we even talking about I was born in the late 90s too

what don't you get. It's from Jurassic park. He picks those binoculars up, and the guy says if they are heavy to put them away cause they are probably expensive. Basically don't touch stuff kid, we don't want you to break it.