Natural way of talking and acting with convincing behaviour can always fool people easily

If you wanna fool people especially your own colleagues ....... do it right .... do it naturally with full of confidence  .... like this Sudin guy........ although towards the end .... it bursts out, and finally, that info just turn out as mere bullshit ........since it was intentionally meant to be a joke by that Sudin guy. Afterall, this is just leisure chatting and joking among friends. Jokes amongst friends are usually called friendly jokes.