土豆土豆我是番茄番茄番茄我是土豆
[tŭ dòu tŭ dòu wŏ shì fān qié fān qié fān qié wŏ shì tŭ dòu]
Translated loosely into English would be a humorous call-and-answer exchange (meaning Potato-Potato-I-Am-Tomato-Tomato-Tomato-I-am-Potato). It might indicate the playful and fun-seeking characteristics.