"Fuck".
In old England a person couldn'
t have sex unless you had the King's permission (unless you were in the Royal Family). When anyone wanted to make a
baby, they got permission from the King, the King gave them a sign that they hung on their door while they were having sex. The sign had
F.*.*.*. (Fornication Under Consent of the King)
on it.
Now you know where that came from.