Quote from Angela in A.A.R.M.
Angela: And I lied to you. Dwight K. Schrute: What? Angela: Philip's your son. Dwight K. Schrute: What? Why would you say that- Angela: I just needed you to want to marry me because you wanted to marry me. Dwight K. Schrute: [excited] Get out! I'm a dad! Angela: You're a dad!