Kitai wrote:Ask them what the most popular catch-phrase in the world is.
I did and this is what they replied with.
AQA: 'Let's roll' is the most is the most popular catchphrase in the world. Todd Beamer, passenger on Flight 93 said it on 9/11. Neil Young used it in a tribute song.
Now I can see this being the most popular because I use it a bit myself.