It means you're talking to a jerk and you might want to think about moving on.
What does it mean when someone says this? "If I start telling you that I love you, tell me to stop, because I won't be telling the truth"
Hmmmmmm. Second history question. Sounds an awful lot like school/homework.
The traditional time for tea is 4 in the afternoon. So I assume the people in Boston followed tradition and it would have started at 4PM