The classic Flanders and Swann explanation: https://www.youtube.com/watch?v=VnbiVw_1FNs

Excerpts: No one can consider themsleves educated who doesn't understand the basic language of science - Boyle's law: the greater the external pressure the greater the volume of hot air. I was someone shocked to learn my partner not only doesn't understand the 2nd law of thermodynamics, he doesn't even understand the first!

: Heat won't pass from the cooler to hotter! You can try it if you like but you'd far better notta!

M: Heat is work and work's a curse M: And all the heat in the universe M: Is gonna cool down, M: 'Cos it can't increase M: Then there'll be no more work M: And there'll be perfect peace D: Really? M: Yeah, that's entropy, Man.