何必装疯卖傻强逞英雄
[hé bì zhuāng fēng mài shă qiáng chĕng yīng xióng]
This can be translated as 'Why put on an act of being crazy just to appear brave?'. It expresses a critical stance towards those pretending to be strong and invulnerable while hiding inner fears and vulnerabilities. There's a hint of self-deprecation here too.