The United States came in at 5 inches; Australia came in at 5.2 inches. At the top of the list were the Congo, whose men boasted an average of 7.1 inches. Closely following them were Ecuadorians at 7.0 inches, Ghanaians at 6.8 inches;and Colombians at 6.7 inches. In Europe, Italians were at the top of the list, with 6.2 inches. Next was Greece, at 5.8 inches and Germany at 5.7 inches. Britons measured in at 5.5 inches, beating out the French, who measured 5.3 inches. Rounding out the list were North and South Korea, who both measure, on average, 3.8 inches. বাঙলাদেশের ডাটা পওয়া যায় নাই সুত্র:http://www.medicaldaily.com/articles/12439/20121001/penis-size-study-113-countries-shows-who.htm