NCBI ROFL: The pressing question this Penis Friday: how hard is hard enough?

Discoblog
By ncbi rofl
Jul 11, 2009 1:33 AMNov 5, 2019 8:52 AM

Newsletter

Sign up for our email newsletter for the latest science news
 
0 free articles left
Want More? Get unlimited access for as low as $1.99/month
Subscribe

Already a subscriber?

Register or Log In

0 free articlesSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

Stay Curious

Sign up for our weekly newsletter and unlock one more article for free.

 

View our Privacy Policy

Want more?
Keep reading for as low as $1.99!

Log In or Register

Already a subscriber?
Find my Subscription

More From Discover
The Sciences
More than 100 Items in the British Royal Regalia Symbolize Power and Tradition Through the Ages
The Sciences
Did Neanderthals Bury Their Dead with Flowers? Shanidar Cave Findings Put Questions to Rest
The Sciences
What Our World May Have Looked Like If Neanderthals Hadn't Died Off
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
View our privacy policy
Subscribe
To The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Subscribe
FacebookInstagramTwitterYouTubeSoundcloudRSS
The MagazineAbout DiscoverPrivacy PolicySubscribeAdvertiseNewsletterTerms of UseCustomer ServiceContactCopyright PolicyCorrection PolicyOur StaffTransparency
Copyright © 2025 LabX Media Group
Website Accessibility
Login