I just learned the phrase from a kid at work today but here is my buddy Leonard on his best behavior (not his choice). My sister dressed him up in an old practice Jersey for the annual cross town rivalry high school game .
Our Panda is the Blue Heeler-Lab mix closest to the camera. What the camera doesn't show is these two were storming up a steep hill at a couple thousand miles an hour. Looking at the hill made me tired; watching their full speed ascent made me want to sit down.