We all know the kick-yourself feeling of getting to work only to realise you've forgotten your lunch.
So we can all appreciate the skills of this Korean wife who has mastered a technique for getting her hapless husband his sandwich even if he leaves home without it.
As this footage shows, the woman is able to effortlessly toss the sandwich from the couple's high-rise apartment and through the sunroof of her husband's car.
In the footage, which has been viewed more than 1 million times in YouTube, the precious cargo can be seen landing perfectly on the car's front seat.
The appreciative man can then be seen throwing her a quick thumbs up through the open sun roof before driving off to work.
It is not known exactly where the footage was taken, though it is captioned in Korean, and so was likely shot somewhere in South Korea.