Laisee or 賴屎

Today our cleaner has come, but I need to go out for work. Ah Lun was still sleeping by the time I leave home, so I am planning to leave him a few messages.
Our cleaner has always been nice to us, eg she brought me soup, chicken, etc in the past but refused to accept our money except her salary.
Therefore, we are planning to send her a big red packet on the last day of CNY. I tactfully put it into her hand bag this time as she tried to give back money to me many many times.
I update the above to Ah Lun via what's app. But when he woke up and read the message, he called me why Kailan poo-poo in Fong Jie's handbag?
I said what?????? Later I found out that he thought laisee as 賴屎！His brain is all about the shitty stuff.