what does this joke mean? A polar bear and a penguin playing together, the penguin pull hair down,Then said to the polar bear,"how cold oh!" the Polar bear, also pulling down itself hair , turning to the penguin: "so cold!"

Hi, I am Frank, and I am in shanghai now. I am looking for a Chinese-English Exchange~ Hi, I am Frank, and I am in shanghai now. I am looking for a Chinese-English Exchange~I think talk face to face is an excellent way to practice spoken language. And I am a regular  9:00 to 17:30.

If you want to practice your spoken mandarin, I will be a good partner~~ If you want to practice your spoken mandarin, I will be a good partner~~

hi, I am Frank,and I live in shanghai now, nice to meet you hi, I am Frank,and I live in shanghai now, nice to meet  you

hi I am Frank I am Frank,and I am in shanghai now ,nice to meet you