听说小四是个刷马桶的
[tīng shuō xiăo sì shì gè shuā mă tŏng de]
The name 'I heard Xiao Si is a toilet cleaner' may imply humility or an ironic, self-deprecating humor. Sometimes it expresses admiration or humor based on a known figure who is unexpectedly doing humble work. There isn't much of a cultural context, mainly relying on individual experience and understanding.