Okay, so, you know, the big risk about bad puns―or the dangerous art of derivation therefrom―is that they just don’t work. ‘Nuff said.
Meanwhile, I recommend simply reading Adam’s cartoon instead of trying to guess what this particular panel means.
And let me at least make clear that it really doesn’t have anything to do with equine fashion accessories.
Huber, Adam. “Put the Park Before the Horse”. Bug Martini 26 May 2015.