Snow penis: Not funny says Harvard
http://www.thecrimson.com/article.aspx?ref=274155
Some great quotes in that article. It sounds like a few women felt threatened by a giant snow penis (like they were going to get assaulted by it). I would have offered to make a giant vagina...wonder what they would have thought of that.
Some kids did this at my school 2 years ago. We had a big snow storm and a few kids built it in front of 2 dorms. It was at least six feet tall and as far as snow sculptures go, was a fine piece of work. It got ripped down a few hours later.