Then he needs to change that. And do it now.
I say "Panther Piss!" as my interjection of choice when I'm angry. There's very little chance I'm going to offend a panther.
That's just what he says when he gets upset is a terrible excuse... I mean really TERRIBLE. What if he said "Oh, go beat your wife!" When ever he got upset? Or "Kill a (insert racial slur here)!" When ever he gets upset. It's ridiculous to think "Oh that's just what he says when he's upset."
Interesting. From what I understand you are a "good" (may be even great) putter; so I am guessing for the most part you are probably "target" focused also known as external attention. I can remember playing in an interclub match at Aronimink country club; it was spring, so cool temps, and rained the whole time - I was miserable but managed to win my match. I putted lights out that day - the only thing I remembered is walking up to the ball and focusing on the hole - didn't worry about reading the putt or anything - I wanted to get off the course.
easy - ride; I'd rather relax and enjoy the scenery rather than have something else to deal with. Besides, as someone here can attest to (@billchao), I've nearly gotten lost driving one time on a poorly marked area of a course with the cart path running through a neighborhood or something 🙄