No, wasn't joking, just making a comment (a bit like the bible and Quran) based on stories/rumours from long dead third parties about what someone between 1600 to 2000 years ago actually looked like..
Best interpretaion though on muhammeds appearance is
http://www.inthenameofallah.org/Muha...ppearance.html but again you are getting a translation from an interpretation taken from perhaps a dozen other interpretations
Now boys and girls, back on the Burkha topic