Actually you should wash porridge under a cold tap as it’s all gloopy and sticky when you use the hot. Best to leave it to soak in cold.
But I guess the point is that this young man has never had porridge, not that he was uneducated about the ecologically correct way to wash bowls, and was therefore due to be ritually shunned. I mean, fair enough, it’s not 1962 anymore, you don’t have to eat fucking porridge every morning.
EDIT: I’ve been quite supportive of XR until now but if I have to eat porridge for ecological reasons then I’m out out