Question

what might be the thoughts of british familiar​

Answer 1

To be honest, I am surprised to learn it came from Great Britain, which shows how well it has integrated into American slang. Most British slang is at least recognizable at a glance to Americans as foreign, whether its the cant of posh boffins and solicitors queuing in the car park for lorries or just a quick knock up in the morning, it stands out. That phrase, in contrast, no longer reads as foreign...