A few degrees
This didn't happen to me but to my co worker but I was in earshot when it happened.
My co worker was serving these people their wine and being the fine dining service that we are we always offer them to taste it before fully pouring it out.
Well my co worker poured out a nip and the guy tried it and replied with the wonderful sc style saying:
'This is a few degrees too warm!'
He sent the bottle back and demanded another one. To say that he was any better after that would be a full blown lie on my part.
I have to give it to my co worker she handled it with great patience, whereas I would have been laughing my arse off.
Am I sad because I am looking forward to the day when the people I will be dealing with will no longer be able to talk back?