It's on like Donkey Kong

Harry Potter, "EXPERLLIARMUS!"

Voldemort, "..."

Harry Potter, "CONFUNDO!"

Voldemort, "..."

Harry Potter, "EXPECTO PATRONUM!"

Voldemort, "..."

Harry Potter, "STUPEFY!"

Voldemort, "..."

Pink Duck, "Hey Harry, what's up with your stick? It's really not working right now. This is just more of a ongoing staring contest, except... wait, did he blink? Yeaaa! Voldemort lost! He totally blinked!"