Unless you are wearing a kilt, commando is just wrong if you are, um, creating any kind of moisture. You'll get more bacteria growing on your shorts than in the deli counter at Price Choppers.
If you are going to be riding a bike, why not wear proper bike underwear - not stuff with padding, but stuff that wont ride up and introduce your boys to the world.
The link is to a Runners' shop, but I'm sure you can get these anywhere where sports stuff is sold. And yes, the cost is Canadian. Last I checked, one US dollar is about 56 bucks Canadian.
http://www.shop.runningroom.com/prod...oducts_id=2027