Why I called it "91 oh god"?

Well, In 2017 as a teen, I was playing Wii sports with little kids at a friends house. I showed them the glitch where in the bowling challenge, you throw the ball onto the wall of the bumpers and it creates an earthquake, knocking all 91 pins. Here's a script of what the kids said:

(Earthquake knocks all 91 pins)

Kid 1: What? What?

Other kids: Oooh (Laughs)

Kid 2: 91, Oh my god