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The size is measured according to length and circumference (both in inches), and scaled from Ideal to Not Satisfying (too small in length and girth, or too big in length and girth, or any freaky combination of small and big) - with stops at Very Satisfying But Not Ideal, Satisfying, and Enjoyable along the way.
Apparently, the ideal size is from 7 to 8.25 inches in length and from 6.25 to 6.15 inches in circumference. Who knew?
The chart below:
You can also check out Buzzfeed's Acual Penis Size Chart, which shows the actual distribution of human penis size.
What do you think? Do you think this is an accurate representation? Tell us your thoughts below!