I was once dispatched by a withering look of contempt from a german service engineer, who I called out to fix my Hotpoint washing machine, shortly after moving there on a secondment.
The bloke couldn't fathom why there was both a hot and cold feed and having poked about a bit, he suggested we by a proper machine to do the job.. Recognising we were on a loser, we swiftly went off to the local Saturn and weighed in with a Siemens.