Rob Roy is a 1995 adventure film directed by Michael Caton-Jones. Liam Neeson stars as Rob Roy MacGregor, an 18th-century Scottish clan chief who battles with an unscrupulous nobleman in the Scottish Highlands. Jessica Lange, John Hurt, Tim Roth, Eric Stoltz, Brian Cox, and Jason Flemyng also star. Roth was nominated for the Academy Award for Best Supporting Actor for his portrayal of the amoral aristocrat Archibald Cunningham. Wikipedia
Duke of Argyll: So, Mr. Cunningham, what are these principle sins that distress your mother? Dice? Drink? Or are you a buggerer of boys?
Archibald Cunningham: It is years, Your Grace, since I buggered a boy... And in my own defense, I must add, I thought him a girl at the moment of entry.
Duke of Argyll: (laughs) Do you hear that, Will? Young Cunningham here was unable to tell arse from quim. What say you to that?
Will Guthrie: I've heard that many Englishmen have that same difficulty.