`  == Big mistake ==  There appears to be an error in one of the quoted measurements. I quote:  A 2005 Study, ``Penile measurements in normal adult Jordanians and in patients with erectile dysfunction.`` The purpose of this work was to determine penile size in adult normal (group one, 271) and impotent (group two, 109). In group one mean midshaft circumference was 89.8±14 cm, mean flaccid length was mean 9.3±19 cm, and mean stretched length was 13.5±23 cm. In group two, mean flaccid length was 7.7±13 cm, and mean stretched length was 11.6±14 cm.[23]  The 89.8cm figure cannot be right (it's nearly a metre!)`