售票員

售 = 口 + 隹 : Sherlock Holmes (sh) opened a business in the outhouse's bathroom (ou4). His business plan is to sell (售) mandarins (口) by having sparrows (隹) deliver them directly to the customer. Though the delivery works well, Sherlock has problems with having the sparrows return with the money.

票 = 示 + 覀 : Pocahontas (pi) urgently needs to use the aorta's bathroom (ao4). In the bathroom there is a cleaning lady next to a guidon (示) on which it is written that you have to purchase a ticket (票) if you want to use the bathroom. To make sure that everyone is willing to pay the lady equipped herself with a knuckleduster (覀).

员 = 口 + 贝 : Mnemonic symbol from 服务员, a waiter.

员 = 口 + 贝 : Yu the Great and a crab are having dinner just inside the anthill's kitchen. They ordered mandarins, and the waiter serves them.