While I might say 18+, this does not technically count as porn and there are no actual penises... unless you go into the BBS thread, but still...
http://www.newgrounds.com/store/product/penicorn
Click the link in the product description if you actually want to see a penicorn in full detail.
http://www.newgrounds.com/store/product/penicorn
Click the link in the product description if you actually want to see a penicorn in full detail.