Continuity mistake: Trina throws Tori's laptop onto the couch next to them. About a minute later, Jade comes in to Tori and Trina's house, and sits on that couch, where the laptop originally was. The laptop is missing, and nobody could've moved it, because nobody was near the couch in between the two events.
Continuity mistake: Salt is visible on Jade's table before she gets the answer wrong and the salt pours on her from above.
Suggested correction: It was Ponnie's locker. Remember in the episode "Crazy Ponnie", she was like "Your locker used to be my locker!"
No, because Ponnie's had to be decorated differently. Why would she put "make it shine"?