In Come On, when Ted decides to spoil Robin's camping excursion with Sandy Rivers so he can lastly win her above, he asks Barney to call an ex-lover of his, Penelope, so she can educate him how to do a rain dance. In Moving Day, when Ted is about to shift into Robin's condominium, Barney makes an attempt to encourage Ted not to do it. In World's Greatest Couple, due to Lily's awful apartment, she asks Barney to keep at his place.