Seriously, what part of she had lived with 4 other teenagers, 3 of whom were boys did they not understand? In this case however, it wasn't just practice thanks to ignoring the boys--but Starfire as well at times. The alien princess had some strange customs.

That, and Raven was still determined to not be baited this way. She would out-stubborn them. She could meditate in a quiet car later, after her victory.