Here’s the scenario:
You’ve gone to the Sainsbury’s opposite your work and picked up a 4-pack of Snickers Bars*. On the way back to your desk, you realise that you need a wee. The work toilets are on the way back to your desk.
- Go back to your desk, put your food away in your bag / drawer and then go to the toilet, or
- Take your shopping with you into the toilet?
You haven’t got a bag to put your purchase into.
*or whatever. They’re currently £1, fwiw