Meatier Than Yours

Okay, listen up, genius. The joke is that Pluto is makin' a pun. You see, instead of sayin' "Mine is metier than yours," which means his steak is better, he says "Mine is meat-eor than yours." Because Pluto and Saturn are planets and big rocks and stuff fly around in space. Meteors are big rocks flying around in space. Get it? You're so dumb, I bet you try to eat rocks sometimes.