Never, ever do this.

Put it another way: you do the little laugh, manipulate people into liking you, and they assume that you are, indeed, friends.

Then they do something that is absolutely normal behaviour for friends —invite you to brunch or something.

Then you react as though the behaviour is strange, because you are not friends.

And it dawns on them, with brutal humiliation, that they have been conned. They are hurt, embarrassed, confused.

You are not to be trusted. Not by them, and not by anyone they know.

You are a fake.

Or, you can worry less about hacking people and just be real.