Quizz no. 1

How do Brits manage to use their hot-and-cold separate taps without burning their hands?

This is the most intriguing trivia to which we still have not found an answer even after dozens of times suffering - from aow to a slight burn - during our recent one week trip to Scotland. If someone out there knows the secret, pleaseee let us know, it would spare us more damages for our next voyage to England.