Hey guys! Steve here to explain the joke. So basically, a group of theives managed to somehow steal a whole building in the middle the day, with no reguard for the fact that they could get caught, or worse. Assuming the building was someone's home, if they were using a GPS to drive back home, they would find that the GPS was constantly changing the location of their house, since it's now being relocated by the robbers who have the building in their possesion. Since you've made it this far, why not consider following me (@steveexplains)? I write explanations for posts just like this one every day!