"I have a mind to join a club and beat you over the head with it"

Groucho Marx was understood for his amusing and commonly ironical wit. In this quote, he is making use of wit to reveal his stress and also anger in the direction of a person. He is recommending that he is so angry with this individual that he wants to join a club just so he can utilize it to defeat them over the head. This is a funny means of sharing his anger and irritation, as joining a club and also defeating somebody over the head with it is clearly not a real option to the trouble. It is a means of sharing his feelings without actually taking any physical activity.