I put on about 60 pounds by myself. When I first started I had no pinchable fat on me. About 30 pounds in, I started hearing comments: "you're a little bit stocky. I guess it's the freshman 15," or "you look great." I guess it makes sense. I started with 10% body fat, now I'm at 30% and 12 more inches around my waist. Now my belly pokes out and I have love handles.
I guess people associate a little bit of extra fat with looking healthy before you keep adding on the weight and look "fat" fat (it seems different for gals though since they put on weight differently). I feel a little self conscious about my weight, but I still want to add 20 more pounds. Kinda hard though since I'm an ectomorph.