When you’re extremely exhausted, due to strenuous activity as a result of marital duty, or otherwise.
The word cow-kicked is used when one is with an extremely energetic partner, especially if one is on the receiving end. In such cases, it can be physically strenuous, or even painful to receive, but usually it’s still a heck of good time.
You ever have those knee-shaking, can’t stand, gone blind, gone deaf, can’t move afterward, nights of bliss? Yeah, that’s what I’m talking about.
Mary-Lou to her recently married friend: “Shirley, you look so tired! Is married life that hard?”
“Oh, I’m cow-kicked, Mary-Lou. That man does not know the definition of restraint! Can’t complain though.”