adviceman49 answered Tuesday August 16 2011, 8:58 am: According to the latest Ansel Research Survey; the average male penis when erect is between 5.1 & 5.9 inches long.
Average Vagina Size is:
Relaxed
Length 3 1/2 to 4 inches
Diameter 1 Inch
Aroused
Length ("tented) 5 to 6 inches
Diameter 1 1/2 to 2 inches
As you can see by the size chart of the average female vagina. Any penis over 6 inches in length and 2 inches in girth is larger than the average vagina can easily accommodate. A larger penis will cause a woman with an average sized vagina pain during intercourse, especially if the male is not a thoughtful and considerate lover.
Based on this information I would say a fully mature male penis is one that an average female vagina can accommodate comfortably.
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