Real_Space_Captain 3 points 3y ago
My grandmother always said stuff like "can you put the bills in order, wrap them in the receipt, so my husband can easily label them for me?" or "I need the best one, I'm not picky but my husband is very particular"
He died years ago but just the thought that someone will be checking their work is good enough to scare them a bit. It's not perfect, but I would recommend making comments like this, just casually say your partner/friend/sibling will be checking it.
Also, if the price seems off to you, challenge them and say that wasn't what it was last time, even if you've never been there before. This might shake them a bit, and they will claim they misread the menu.
​
EDIT:
As soon as I hit submit, I remember another one. If you are using a card, ask their help to take a picture of the menu/taxi meter so you can compare it with spouse/parent. Say "While I know I can trust you, my husband just likes to make sure I'm not being taken advantage anywhere, just in case" It can feel a little belittling but it can help in extreme cases.