yeh  tht happens to me too   alot!  im sitting in my room (but i never get grounded  thank god  lol  srry)  my 9 yr old sis comes in w/ her friend and i want to be alone on the laptop  i tell thm to get out so i can be alone and blast my music and talk to friends  nxt 10 mins, they come running in b/c they sorta role play as naruto characters (i got thm into it  lol)  my sis is sakura and her friend is ino  and i play sumtimes too and i play as hinata  sakura (sis) got issed off (rp) and was chasing ino (friend) and they run into my room  i minimize everything im doing and stop the music  (i role play on the comp w/ friends) and i dont like thm looking at wat i do  i do the same thing to my parents (but i dont tell thm to get out)   anyway  this happens all the time so its not just you and its not the end f the world  (like we think it is  lol)

Dont feel left out your not the only one that gets introble for a younger sibling commingin your room, makeing a mess, yealling screeming, you yell at them 1 time and BOOM... Done for.

And im talking about my 12 year old sister -_-

lol thts funny