脚踏两只船你划的真漂亮
[jiăo tà liăng zhĭ chuán nĭ huà de zhēn piāo liàng]
Literally, it says 'You are quite beautifully paddling while standing on two boats'. In reality, this is not possible and is used sarcastically for someone being two-timed in a relationship, praising in sarcasm someone who juggles between two romantic interests.