Continuity mistake: When Kantmiss is climbing the tree, the ladder leading up is almost vertical, but in the next shot as she reaches the top, the ladder now has a significant angle to it.
Audio problem: When it shows the field, the priest says to a tribute "Say your prayers, my son 'cause you are dead," his lips don't move at all.
Revealing mistake: KantMiss puts the chicken badge in her sister's hand. Actually through her hand, since it stabs her with a long and sharp pin. But as she holds her hand, the long piece of metal is gone - it's perfectly fine for the characters to suddenly heal from one scene to another since it's a crazy spoof movie, but here we are midway through a visual gag and the nail is missing while the girl is still screaming in pain trying in vain to pull free. (00:04:00)