Another funny wikipedia find
Reread the Roswell incident scanlations and found a link leading to other names for British people.
Heres one of the names that is listed ( why does it seem so familiar...)

"Rosbif/Rosbeef

One explanation of this French term is that rosbif originally referred to English style of cooking roast beef, and especially to the song The Roast Beef of Old England.[9]. Another explanation is linked to the appearance of white-skinned british tourists after a few hours in the French sun, especially in the South (this refers to Britons becoming sun burned with a color close to a rare cooked roast beef).[citation needed]"


ah... again roast beef...
Heres the Link to the page.