 When Brian returns home to warn Peter about the consequences of this development , Peter reveals that he had regained his memory after Ernie the Giant Chicken hit him on the head with " an odd number of objects " earlier that day . Alerted by Brian 's warnings , Peter rushes to reclaim Lois , just as Quagmire 's plans had been delayed by guilt @-@ induced impotence when Lois confessed that she " trusts " him . Peter then professes his love for her , and desire to be with her for the rest of his life , causing Lois to love him again . The two walk home , happy in their reunion , leaving Quagmire as he frustratedly attempts increasingly drastic measures to " resuscitate " his genitalia using : a penis pump , intravenous therapy , and a crash cart with a defibrillator in his closet . 
