About the sense of humor in the testers (yyy works as a tester).

HH: This is the joke. Chukcha bought a refrigerator. He asks why it is so cold in the tundra. Chukcha: Eye, however, in the refrigerator -20, and in the tundra -50, we will warm up!

WOW :
I’m not sure if the refrigerator will work if the ambient temperature is lower.