Tennis racquets are excellent at turning objects — namely, tennis balls — into blobs because the strings have just the right amount of give to absorb a bit of punishment. What’s even cooler though, is when something — like Jell-O — goes straight through the webbing and gets cut and sliced and chopped into jiggly flying snake-like objects.
You can’t actually see that happen in real life (it happens way too fast) so the Slow-Mo Guys put a racquet hitting Jell-O to slow motion and it is fantastic.