Also, for those who can't do it... keep this in mind. Seat to bar drop, and bike geometry. Someone else's bike may have ALOT less weight on the rear wheel because of these two things. I mean, if all your weight is on your bars to begin with, it doesn't matter as much if you stand or sit.

Personally, I've never tried, and doubt i can. Then again, I'm on a 'lax geometry roadie conversion, with not a ton of bar drop.