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ELI5: What happens if you split a proton?

(See title)

So just before I was reading another ELI5 about Nuclear Energy and the topic of fission. So if fission is splitting the bonds between atoms, what happens if you actually split or slice the particles the atom is actually made of?

Thanks in advance!
gpt
It turns out that quarks - the pieces that make up protons and neutrons - can't be out on their own. A lone quark has so much potential energy in its efforts to go stick to another quark that it can actually spontaneously create other quarks to bond with out of nowhere. It's called *quark confinement*.

So if you input enough energy to blast a proton apart - which is possible and has been done in particle accelerators - you'll create a slew of new quark-based particles out of the energy you put in (but not, for any significant period of time, solitary quarks).

[seriously, the forces sticking quarks together are *insane* - a single pair of quarks are pulled with enough force to suspect a one-ton object against Earth's gravity]