逗比你会发光萌比你会发亮
[dòu bĭ nĭ huì fā guāng méng bĭ nĭ huì fā liàng]
Playing with words like 'funny' (doubi) and 'cute' (meibi), this implies you become bright and shining when being funny and cute, reflecting someone who lights up when behaving amusingly or adorably, spreading joy wherever they go.