Kchoo
At Peace.
There is literally no rule that says we can not phase through an object,
In fact, In the case of superfluids, it can and does happen, Here is an article about Superfluids tunneling through a glass container, I believe it was helium with a glass container, Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms This article is on scholarly is it cited by 6173 physicists.
And here is helium as a superfluid climbing out of its container by running up the sides and leaking through the solid glass. Absolute zero viscosity.
Anyway, The point is, What we consider a Solid matter is really just a perception, Atoms don't actually touch one another their electrons repulse one another. Why Physics Says You Can Never Actually Touch Anything there is a very fine electromagnetic field repulsing between atoms that will not allow them to ever really touch, even at incredible densities.
So, In superfluids case, Quantum tunneling is really just allowing the mass of one object to pass between the atoms of the other because atoms never touch anyway.
Except we dont, because our atoms dont slip through most things... our bodies displace things like water and air... but our bodies dont slip through walls... or the floor... like most dare devil kids, my stunts didnt always work... I fell a few times, and I wished the ground at least was bouncier, but at least I didnt fall through it. Whew!