Cold as a joke.

This sentence can refer to the following link:

1, "The temperature is as low as a joke".

2. "It's as cold as an ice sculpture in the northeast".

3. "Cold enough to make people doubt life".

4. "It's as cold as just taking it out of the refrigerator".

5. "It's so cold that people just want to hide in bed."

6. "I'm shivering with cold, like a popsicle."