When a guy grows a mullet then braids it in the style of Ragnor Lothbrok but doesn't quite pull it off due to them suffering from erectile dysfunction.
Guy 1: Have you seen Stephens new hairstyle? He looks like Ragnor Lothbrok
Everyone else: More like Ragnor Softcock
One who is constantly subdued by his partner/wife/fiance to the point where he has no identity of his own, rather just a puppet that she speaks through.
"Geez.. his at home cuddling up to her again"
"Yeah, Sam's such a softcock"
man who cant get a hard on, therefore is a useless cunt, useless cunt therefore being a softcock, softcock can descibe someone who cant or wont do something whatever that might be