万万没想到呦呦切克闹
[wàn wàn méi xiăng dào yōu yōu qiè kè nào]
This is a combination of the phrases from internet culture and Chinese comedy sketch. '万万没想到' means 'never thought that,' often used as an ironic phrase for expressing surprising or unexpected events, while '呦呦切克闹' mimics the sounds of sheep which adds a funny and exaggerated expression in a meme-style language.