I hope not. I'm riding a lot in jeans these days. If I lost a commando thread I'd be really uncomfortable :D

Clean your nose before you leave the house. You just have to do a few minor sniffles along the way to keep it in.

I second the lift elbow and blow snot rocket technique. I have soiled myself doing this, but I got over it.

I seem to need to do it every 5 or 10 minutes or so.

I snort alot of it back and spit it out instead. This increased spitting was the topic of one my very first blog posts, here. The whole spitoon thing didn't end up working out after all.