As an exchange student in the states in mid 70,s I was staying with a family who had a couple of daughters of the Cheer leader / girl next door variety, and we were going up to Washington for couple of days which involved an early start. I offered the previous evening to "knock" them both up in the morning for the early start. This caused both girls to burst out laughing, while parents looked at me some what aghast,needless to say my error was corrected.There was also an issue when I called their female Labrador a "bitch", not a female dog. Two countries separated by a common language !!
Cheers
Mr Mac