Aliens have taken you aboard their ship. You will be asked to make a statement. If the statement is true you will be blasted into atoms. If it is false you will be ejected into space. One statement can get you out alive. What is it and how does
it spare you?
If you tell them your opinion, you haven't told them a statement that's false or true. If you tell them that asparagus is delicious, a few may agree, a few may not agree. In fact it may even cause the aliens to start to fight, giving you a chance to escape.
To make it short, tell them an opinion.