Im a seventh grader, and my freinds all have Xbox 360s
I would really like a ps3 or Xbox 360 and have mentioned it alot to my parents. My dads ok with at however my mom has other thoughts... She is pyschologist and often hears about parents that often fight with their kids with the xbox 360..... If that makes sense.
Im can play the Xbox 360 at my friends house and what ever game I want.... I really want the 360 but my mom does not want me to have it... HELP ME THINK OF SOME WAYS I COULD PROVE TO HER THAT AN XBOX 360 COULD BE A GOOD THING.

Maybe promise your parents that you'll be a lot more responsible with your Xbox360/PS3 and do your chores/responsibilities before playing? And remember to hold up to that promise, lest you want it taken away.
Personally, I'd reccomend you get a PS3. The Xbox 360 does RROD, however, it can be repaired, but that only holds it up an additional year. Also, that voids the warranty if you have it, and to have it repaired via warranty, it might take several weeks, as I've heard they send the xboxes into Taiwan to repair.

Not trying to be a jerk or anything. But can you slow down and say that in a understandable way?

Your want an xbox, your dad wants you to have an xbox, but your mom doesn't?