OH, WAIT. 'BEEN ALREADY.
i talked at length about this practical and political reasons for the roman frontier
here is reconstruction of a roman briton legs: http://photos-b.ak.fbcdn.net/hphotos-ak-snc1/hs127.snc1/5453_148133718288_663523288_3261881_4744540_n.jpg
also, check this peen: http://photos-b.ak.fbcdn.net/hphotos-ak-snc1/hs147.snc1/5453_148133593288_663523288_3261873_7148127_n.jpg
and that's the end of my homage to tilly's fred

p.s. does anyone remember that episode of tucker when he gets a hard-on and his aunt sees it?