Steven Universe, Season 4

[Steven and Peridot, both beaten the first two times to capture the gem monster, are standing on a cliff next to a giant boulder]

Peridot:
Okay... I've analyzed the problems with the previous two Peri-plans. Relying on the injectors introduced too many complicating variables. Now we only have to rely on simple physics! We'll wait until it gets right up under us, not suspecting a thing - because it's so dumb - and then we'll drop this rock right on its stupid head! It's even more flawless! And at this height, nothing can fall on us!

Steven:
What if it doesn't stop where we want it to?

Peridot:
I'M DOING THE BEST I CAN, STEVEN!