This Is How They Do It: Flatworm Penis Fencing

This Is How They Do It: Flatworm Penis Fencinghttp://www.nerve.com/CS/blogs/scanner/archive/2008/09/05/this-is-how-they-do-it-flatworm-penis-fencing.aspxThe flatworm has long been one of our favorite creepy crawlies for the very reason demonstrated in the video below: They have both boy parts and girl parts, and they fence with their penises to determine who will be the male and who will be the femaleenCommunityServer 2007.1 (Build: 20910.1126)re: This Is How They Do It: Flatworm Penis Fencinghttp://www.nerve.com/CS/blogs/scanner/archive/2008/09/05/this-is-how-they-do-it-flatworm-penis-fencing.aspx#124444Fri, 05 Sep 2008 16:17:21 GMTbd485f5c-a45b-491f-8e52-c79e7f680fc3:124444Mandy<p>Pregnancy by bukake!</p> <img src="http://www.nerve.com/CS/aggbug.aspx?PostID=124444" width="1" height="1">re: This Is How They Do It: Flatworm Penis Fencinghttp://www.nerve.com/CS/blogs/scanner/archive/2008/09/05/this-is-how-they-do-it-flatworm-penis-fencing.aspx#124420Fri, 05 Sep 2008 15:42:57 GMTbd485f5c-a45b-491f-8e52-c79e7f680fc3:124420BibroK<p>Aren't those nudibranchs, not flatworms?</p> <img src="http://www.nerve.com/CS/aggbug.aspx?PostID=124420" width="1" height="1">