Penguins. Whales. Jake the dog from Adventure Time. Teenage Mutant Ninja Turtles. Zoidberg. Somehow, Goat Simulator got even wackier, and it's amazing.
You can watch Markiplier play through the Goat Simulator update, which added a ton of new stuff to the game for free, here. It's also worth noting that the game adds stuff like multiplayer and hats in the update too, though we don't get to see it in this footage—this is mostly devoted to the silly easter eggs the game features.
I think I might have to boot Goat Simulator up, just to get to play as that grocery cart. Or maybe I'll just contemplate what a weird sentence that is.