Can you do the cup-blowing challenge?
21 March 2017 Last updated at 14:25 GMT
You might have heard of the bottle-flipping challenge, but how about the cup-blowing challenge?
It's a new craze that is sweeping the internet, where you try to blow one cup into another.
We went to a school to meet some of you guys to find out a bit more about it.
Can you do it?