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A member asked:

Why is my penis so small flaccid but grows a lot when erect?

A doctor has provided 1 answer
Dr. George Klauber answered

Specializes in Pediatric Urology

From empty to full: A flaccid penis has empty corpora cavernosa (penile dods), with erection these fill with blood. Penis becomes inflated and thus is much larger when erect. Analogy is filling a balloon with air.

Dr Brown agreed

Answered 4/14/2016

5.9k views

Thank

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My flaccid penis size is 2 inch and erect size is 4.5.I want to increase my flaccid penis size.My penis becomes small in college why?

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