你是我的灰太狼我是你的喜洋洋
[nĭ shì wŏ de huī tài láng wŏ shì nĭ de xĭ yáng yáng]
These are characters from a Chinese animated series 'Pleasant Goat and Big Big Wolf.' The name reflects mutual adoration in a playful manner; just as Pleasant Goat (Xiyangyang) represents kindness while Big Bad Wolf (Heitailang) has become lovably foolish in pursuing him.