The River Tweed (156 Kilometers long) flows primarily through the Borders[?] region of Scotland. Its lower reaches mark the Scots border with England for 27 kilometers near Berwick-upon-Tweed.
... opens in the vulva between the clitoris and the vaginal opening.
In the human male, the urethra is about 8 inches (200 mm) long and opens at the end of the penis. ...