This means 1.that time when
you are arguing with someone, or
2.if they are trying to argue with you, or 3.if
you are trying to argue with them.
1. "Can I
call you back later? We'
re all rah right now."
2. "Hey, what's up? Why are you so rah all of a sudden?"
3. "Shut up! I'm not being rah!"