No, not a duma**, just have never been shown how to put a bike on a centerstand properly.
I've been riding for 35 years now, for the first 15 years it was just jerk it on the stand, all muscle, no brain.
Then I went t o work at a bike shop for a few years, the "lot mutes" laughed their butts off watching me struggle with a then new '84 Gold Wing. The young guy, couldn't have been 135#'s showed me the proper way, he just snapped it up on the stand.
So don't take offense, just stop by the local bike shop and ask how it's done.