Good first post! I see myself doing a lot of them lol.

You know you're a narcissist when you threaten someone to do something for you and observers called you entitled. And for the life of you, you can't see how this is entitlement. I mean I threatened you. If I was entitled I would just expect you to do it.

You know you're a narcissist someone insults you/or does something ****** and you nod your head and laugh. But the next time you see their materials (preferably expensive) left unattended you throw them in the garbage

Actually if anyone gets in your way you instantly wish death upon them. Horrible disease, accident, suicide, whatever.

When you view your sibling/s as money draining entities and wish they had died in the womb but you'll take them dying before your parents die so you get 100% of the inheritance.

When someone is crying/distress/pain and you can't help but laugh at them and then they get mad and tell you "well I see how much you care about me. Thanks" If they wake you up to deal with any of the 3 you call them profane names.