I think he meant this:
http://4.bp.blogspot.com/_v_-zbrQbNac/SMfJClyMJdI/AAAAAAAAADY/mOiPG-UHmEE/s400/Kerry+on+bike.jpg
Rather than this:
http://cycling.lohudblogs.com/files/2009/01/distinctly-bush_wolf2.jpg
Hence the “girly” moniker. . .
No, I think he means being a man means you have to go without protection because it’s ‘cool’.
I bet he thinks hardhats are girly too since real men don’t prepare themselves appropriately.