User259iroloboy said:
Presumably not intended for use with a glass type thermos?
clever things thermos flasks, you put hot liquid in, it stays hot, you put cold liquid in , it stays cold...But how does the thermos know??
David Beckham was walking through Harrods one day when he saw something. "What's that?" He asked."It's a thermos flask for keeping hot things hot and cold things cold"said the assistant. "That's a good idea, I think I'll buy one".
He got home and showed Victoria. "What's that then" she asked. "It's a thermos flask for keeping hot things hot and cold things cold"he replied cleverly. "Wow, that's fantastic"said posh.
The next day at training, Ryan Giggs came up to David and said"What the hell is that Dave?"
"It's a thermos flask"
"What's it for?"
David, feeling clever, said"It's for keeping hot things hot and cold things cold."
"Cor! It's a great thing to bring to training. What have you got in there now?"
"Two cups of coffee and a cornetto"