Can someone explain to me what this joke means?

Your cousin has a bad temper. He is already dating a girlfriend. It seems that it is mainly because he is rich. Fortunately, your aunt is a good couple, but this girlfriend’s shoes are washed by the elders. It seems like a good match for your cousin. Both of them have bad character. I feel sorry for your uncle and your aunt. . . Just ignore them and do whatever you want. . . Give him some face today and ignore him in the future.