When Tate is tempting Isha with the chicken on the couch. It changes from a drumstick to a chicken wing between shots and then changes back to a drumstick when she takes a bite.
When Principal Dickwalder is first handed a bag of cocaine, it's in a sealed plastic bag. When he snorts it, it turns into a a Ziploc baggie of coke.
A cameraman is clearly visible as the principal drives his car into a sign.