When you try to talk nonsense in social media

There are lots of people like this in social media who act like they know everything and is an expert at whatever it is that they are saying. Take a look at what he just Tweeted in the video lmfao. It's funny how he's too confident in what he's saying in the Tweet but when he gets faced with a real situation regarding what he Tweeted, he can't even do what he said.