Not embarrassed per se, but at least self-conscious because certain folks have a low opinion of it...
Taurus Judge Magnum .410 Bore/.45 Long Colt.
I bought it because I thought it was cool/impressive, but was surprised to learn that my sentiments weren't shared. A lot of folks seem downright offended by this firearm and cannot resist the urge to denigrate it at every available opportunity, at least within certain communities. So for the first few years that I owned it I was sort of shy about it.
Fortunately, I no longer feel that way. I like it, I think that a Revolver that can shoot shotgun shells is awesome, and that it has a lot more utility than a typical .45 Colt Revolver too.