Brother goes and hits his sister
in the back of the head.
She screams, "OW!" Then chases after him as he runs away.
He slips on a bannana peel as he tries to make a get away and falls flat on his butt getting the breath
knocked out of him.
Then his sister comes up and smirks saying, "Karma."
Brother replies
sarcastically, "What are you, the karma duke?"