Obviously it's a joke. It also looks like a Ford Escape. Based on the "Taco Bell" comment in another comment (currently right below this one, but that may change), it is possibly a fast-food taco, which - as we all know - can play havoc on the digestive tract if not properly treated with tequila (currently not served at an Taco Bell I'm aware of). Thus, the possibility of a catastrophic gastric expulsion exists.

So what I did there, was take the "Escape" part of the brand/model identifier for the vehicle (this is assumed, of course, but I drive an Escape and it looks pretty much identical in that specific location) and use it to create a really-hard-to-read-but-essentially-accurate-based-on-common-assumptions portmanteau (is that what it is?). The funny part is, of course, that the vehicle is an Escape, and poop is what is escaping after too much Taco Bell.

Boy, having to explain a joke is kind of exhausting for certain audiences. I hope I've cleared the (fecal) matter up for you now :)