Board Thread:Off-topic/@comment-27660616-20160411170915

This is called Prove it.

One person says something you can't do, then the person below you tries to prove it then says something you can't and so on like,

P1:You can't.....

P2:I have the proof so this is possible...

P2:You can't....

And so on...

First person who replies starts. 