His ball goes out of bounds into a farmer's field. Just as he is about to climb over the fence to retrieve his ball an elderly farmer shouts out to him "Hey, keep off my land. You can't climb my fence without asking my permission first".
The barrister says "You obviously have no idea who I am. I am a top barrister and you are just some dumb farmer. If you prevent me from retrieving my ball, I can sue you for every penny you have".
"I don't know how you fancy barristers settle things" says the farmer "but around here we use the one-punch rule".
"The one-punch rule... what is that?" asks the barrister.
The old farmer explains "First I get to give you one punch, then you get to punch me, and so on until one of us gives up".
The barrister looks at the old farmer and thinks there is no way he can lose a fight against such an old man so he agrees to the contest.
The old farmer draws back his fist and, with all his strength, punches the barrister square on the nose, knocking him to the ground and drawing blood.
After taking a few minutes to recover the barrister says "Right you old codger.... now it's my turn!"
"No need" says the farmer
Spoiler:
