Meaning you have an extra set of chromosomes. Nice way of calling someone a retard. Powerplay is a man-up scenario in sports, mostly from opposing team serving a penalty.
Bill owes Greg his phone that Greg let him borrow. Bill has avoided Greg in order to not give back Greg's phone. Greg finds Bill to confront him and ask for his phone back. Bill says "Not right now, I can't". Greg then shows Bill the title to his car he is holding in his hand. Bill then says, "Ok here is your phone." Greg engaged in powerplay.