No Questions Asked

This catchphrase was the theme for an episode of the American sitcom How I Met Your Mother. It was used when one of the central characters needed a favour and the reasons for it had to be kept secret. We saw some brilliant scenarios such as breaking into a hotel room to delete a text message from a mobile and rescuing them from a tirade of children in the classroom. But the key phrase opens up a whole variety of scenarios. It could be a verbal agreement that you're allowed to use the phrase once a year. If you've accidentally run over the family cat on your way out to work; would you ask your best friend to replace it without any questions? You could even make it as a movie title exploring relationships within couples or flat mates. Would you perform a task if someone asked you to do it with no questions asked? How well do you know and trust them? And what would you be able to ask someone to do without them questioning your motives?