But as we all know, "sexually obsessed" and "Englishman" are contradictary terms (except for certain members of the Royal Family, but they were originally of lusty German stock).

Pick an invasion, and see where the english come from
Romans- Italians.
or Normans- Frenchman
or Vikings- Enough said!

Or the original inhabitants, Celts. I can't remember much about them, except stripping off and painting themselves blue alot seemed popular...