(Your classmate always wears dog ear headbands on her head, and a tail attachment. She'd bark, growl and sticking out tongue like a real dog. Usually to get people's attention. Some people dont care, while most people think it's annoying.)

Daisy: Arf!~

(She just barked at you, and she's sitting on floor and sticking out tongue and even tilting head aside as listening dog. What do you do?)