Scientists are always studying the penis and how big the average boner is. They've just released a huge review about penis measurements, because this sort of study is an ongoing kind. The study combined all the penis measuring data from 20 different studies, and the goal was to create a formal review of average penis sizes across all races and ages.

First, you've got to know this: there are a lot of penis-size studies. But not all were included in this review. They used studies where penis size was measured by a health professional.

This is what they found out about penis length:

And penis girth:

Here are some fun facts to sum it up:

1. Average erect penis is 5.17 inches long.

2. Average flaccid penis is 3.61 inches long.

3. Average stretched, flaccid penis is 5.21 inches long.

4. The average girth of an erect penis is 4.59 inches.

5. Average girth of a flaccid penis is 3.67 inches.

6. Height might be related to penis size.

There could be an association between height and penis size but it is not a guarantee.

7. Big feet does not equal big member.

Neither did hands, fingers, or whatever.

8. Stretched, flaccid penises are about the same size as erect penises.

9. Race is not a factor of the size of your penis.

They could not find evidence of racial differences.

10. The study was difficult because a lot of things affect penis length.

Temperature, arousal, and recent ejaculation could impact measurements!

11. There's a way to make your little guy bigger in size without any surgery.

Weight, high blood pressure, increased cholesterol, diabetes and cardiovascular disease affect the length and strength of your boner.

But really, it's not how it hangs, folks. It's how it bangs!