Permanent Brain Damage Puns

In my business law class we were discussing this court case. In the case, a woman named Courtney was hitting off the tee box at a country club and sliced the shot off the course. The ball hit a guy who was working on a nearby roof, and gave him permanent brain damage. Our professor then asked us who we thought was responsible for the damages: the golf course, the course designer, or the woman. A student in the back asks "Well what if Courtney was drunk while she was playing" to which our professor responded

"Well then we would just have a classic case of drinking... and driving."

I'm still not sure which was louder, my friend and I bursting out laughing or the collective groan that filled the room.