In our house this means Family Hold Back and is used when visitors are coming for a meal and there is not enough food. It came to mind today as I've cooked a piece of gammon and it's not as big as I thought it was - and we have visitors for the weekend. So OH and I will have to be careful how much we have.
Can't remember when this started but wondered if anyone else uses it.
Another common teatime saying here is "touch and take" eg if you touch a piece of cake you can't change your mind and have a chocolate biscuit instead!
Problems in Harry and Meghan Marriage



