How do you piss your SIL/Co-sis - just to get even

Hello friends.

I am new to IL and been glued to it since.
I have been married for the last 2 years.

The greatest menace in my married life is my younger co sister who was married before me. When I got married, I could sense that she was extremely insecure about me. But later I began seeing that she is an evil incarnate. All her actions are targeted towards me. Her only agenda in life seems to be to make sure that my PIls don't like/praise/appreciate me. She is a great liar/fakester who is only trying to be over sweet to my MIL all the time. It is tiring to witness her shenanigans.

But sometimes, I do have fun looking at her dumb tactics and her lame dramas. Now I want to annoy her a lot and make her jealous as hell!!
What do you women do to irritate such women at you place? Something you do intentionally and they go all pissy and you have a hearty laugh!!

Just hoping she is not on IL and reading this :-D

 

Thank you all ladies!!
As much as I ignore, her behavior is so abhorrent, it makes me nuts. I have cried a lot over her actions, she brought misunderstanding between me and my husband when were initially married. Those times I can neither forgive not forget. She single handedly ruined my first year of married life. She has not allowed me to be close to my MIL by her dirty politics!
I want to kick her ass some day and play her where it hurts her the most!
By making her irritated n jealous.

 

Hahaha thanks AprilLisa very funny indeed. Unfortunately I don't think I can carry out such a big lie/prank. I wish I could do that,she would literally pee in pants. but I never call her, we all stay in the same house and she never gives me any privacy with my MIL. So it would be clear there is nothing of that sort. Also she knows my MILs belongings very well because she stays at home while I work.

 

Thanks girl. I understand your point but I no longer believe in it. When I got married I was the kind who thought of her as kiddish. I actually pampered her, gave her nice gifts etc etc. By the time I realised what was going on, I shifted my belief to 'to each his own karma!'. But when I see her today, all those beliefs about do good no matter what, what you sow, so you reap, have all gone down the drain.

Even today if she just sees us laugh in the dining room or living room, she goes all black n blue. She will come sit shamelessly or peep n try to snoop.