我是光头强谁愿当熊大熊二
[wŏ shì guāng tóu qiáng shéi yuàn dāng xióng dà xióng èr]
It refers to a famous animation character from Pleasant Goat and Big Big Wolf series 'Qiang Guangtou' (literally Bald Strong), saying he is willing to play Bald Qiang while asking rhetorically if anyone would volunteer to be the big panda characters (Bing BIng and Peng Peng) - known for causing him trouble.