Looks like something you would find on the side of a boxcar tagged by some ferro-equinologist “artist.”
Much of the graffiti you see on train cars actually seems to have more skill and talent behind it than this thing, in terms of composition, use of space, color, depth, you name it.
I suppose it's possible that the guy painted, for some reason, exactly the crazy thing he wanted, and that if you asked him to paint a realistic picture of your cat, he would do that with great skill. In that case, I would cut him some slack. But this looks to me like the guy was all personality and little skill; even his early-career graffiti work looks amateurish by today's measure.