Who will write me some cold jokes? It is cold enough.

A university has been worried about stray dogs on campus. Stray dogs sometimes bark at people unintentionally. Some dogs even run to the classroom during class, and then lie prone in front of the podium ... One day, the bell rings and students come into the classroom one after another. At this moment, I saw a stray dog swaggering into the classroom and lying in front of the podium without looking up. At this time, the professor couldn't bear it and shouted, "Hurry!" Somebody get rid of this dog, it's already in this class! ..」