Maybe it relates to reindeer horns? Maybe not.

http://events.charlotteobserver.com/charlotte-nc/events/show/89240724-a-very-horny-christmas-viking-christmas-party


http://www.flickr.com/photos/joecashin/4079714937/

And then, there is this song:http://www.themadmusicarchive.com/song_details.aspx?SongID=4699