Why not? Everybody does it
I've long thought that the only two ethnic groups you can ridicule with impunity are the Irish and the Scots.
Recently, Conan O'Brien observed on his show that the only ethnic group they make fun of that never complains to the network is the Irish.
The Scots in particular have taken a beating: the entire Shrek series plus a number of other Mike Myers characters such as Stuart Mackenzie (pictured), the Extra chewing gum commercials with an animated, apparently Scottish stick of gum, the Keith's beer commercials starring the fellow recently convicted for possessing child pornography.
As Bill Bennett might say, where is the outrage?
Anyhow, that bastion of political correctness, the Toronto Star, ran a profile of Conservative national campaign manager Doug Finley on the weekend, a profile that portrayed him as ruthless in dispatching undesirable candidates, including this bit of colour:
Finley finally “lost it,” according to [former Conservative candidate Mark] Warner, a scene Warner says he can't forget, complete with heavy Scottish brogue soundtrack.
“Wheeerrrrrrrrr have you ever run before? Wheeerrrrrrrrr?
Tell me, wheeerrrrrrrrr? Wheeerrrrrrrrr?”