I am still shaking my head.  If I had not heard it I would never believe it.  My sister and brother know that an argument like this would never happen to us growing up.  We had some knock down drag out fights I tell you.  My poor sheltered, non tv watching, book reading children have fights that just make me giggle.
Here is a summary.
M.. MOooooooommmmm MOM Abby won't let me play with her slinkey.
A.. IT is MY slinkey and I don't want you playing with it.
Mom:  Ok put the slinkey away if you aren't going to share no one gets to play.
 (moments of quiet)  Abby goes to her room, Matthew to his.
M goes and stands at Abby's door.
M .. OH YA WELLLL from now on you can't come in my room and you can't touch my books! THEY ARE ALL MINE!! DON"T TOUCH THEM!
(at this moment I am thinking Ya well lets see how that works for you)
Silence
MOOOOOOOMMMMMMMMM!!  MOM!  Matthew says I can't read his books, Is that true?

Uhhhh only home schooled kids I swear.