"Slim"? "Skin Tight" is more like it. Despite the tight, they are quite comfortable. Because they're snug in the seat, thigh and crotch area, they are not for the shy guy. Definitely not your dad's dockers.
I'm a 34 or 33 inch waist, depending on the cut of the pants. I got these in a 33, and they are super tight around the seat, thigh and crotch. They are very comfortable, but they are too tight for the shy guy.