If its on Futurama it must be true!
From the "love hearts" episode:
Lurr: "Blech! These candies are chalky and unpleasant!"
Wife: "And what is this emotion you humans call 'wuv'?"
Lurr: "Surely it says 'love'."
Wife: "No, 'wuv'! With an Earth 'w'. Behold!"
Lurr: "This concept of 'wuv' confuses and infuriates us!"
Listen to Lurr