the holes in highway medians or by the side of the road where police hide so they can catch you for speeding
also very good and illegal places to make u-turns on the highway
Person 1: All right, take this next exit and we'll get back on the highway going south.
Person 2: Or, I could just look for a police hole!
Person 1: Slow down, the speed limit's only 45 here.
Person 2: There aren't any police...Oh, shoot, there's one in that police hole...