By useyourownbed - 18/09/2012 20:06 - United States - Byron
By useyourownbed - 18/09/2012 20:06 - United States - Byron
By tawnaciousd - 10/09/2009 06:35 - United States
By anonymous - 08/01/2015 19:10 - United States - Noblesville
By the_lonely_life - 27/06/2013 01:02 - United States
By Anonymous - 12/08/2024 00:00 - Australia
By HughGorgy - 20/03/2009 05:37 - Canada
By IHateMySister - 02/01/2016 10:36 - Denmark - Kirke-hyllinge
By lolilovemyboyfriend - 19/10/2011 14:37 - United States
By Somebody fucking kill me! - 12/08/2025 05:00 - Mexico
By Stacy - 21/03/2009 00:43 - United States
By nayahbear24 - 27/08/2014 22:52 - United States - Trenton
Pee in her bed
And now yours is too.
Ok, OP. Here's what you do. Set a bunch of alarm clocks to go off in her room at random times (preferably if you can predict when the sister and her boyfriend are going to do it). Once those are all set, lie in wait. Wait until they start doing it. And wait. And wait. Maybe fap. Just as he is about to climax, light the room on fire. That'll teach her.
Well you must both be skanks.....just sayin!!! YDI
How? The OP didn't say anything about having sex at all. Screw off, jerk.
Maybe you should open up a condom, spit in it and bring it to the family dinner table and tell her she "forgot something else"
That is just wrong!
Keywords
Take a shit on her bed and say the bathroom was dirty
Poop on her pillow and say "sorry, the toilet was dirty".