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Lois is about to turn 43, and her friends and family throw her a surprise party in honor of it. Peter makes cracks abou t how her body is not as tight and firm as it once was, and so she runs off, re-appearing the next day with a new look, a lower back tattoo, and new hip friends. Peter tries to keep up with Lois's new lifestyle, but finds himself increasingly worn out. Finally, when she winds up trying to seduce Justin Bieber backstage at one of his concerts, Peter punches him and tells her that while she may not be the young hottie he married, he still loves her and cares for her.