Oh man, I totally envy those girls who are thin AND look toned without even trying! I just wonder how it's possible. How can they look so toned without exercise? The only answer I can come up with is that their body fat percentage must be so low that they look ALL muscle!
As for my friends, a good portion of them do happen to be either considered skinny, thin, or average. I don't have any close fat friends, but that obviously wasn't a conscious decision.
And Ohhkay8, I am SO perplexed by people who eat whatever they want to, get drunk whenever they feel like it, hardly work out (if at all) and never gain an ounce! They don't understand what it's like to be fat, nor do they understand how someone could possibly get there! I recently spoke with a skinny friend, who asked me for the umteenth time how I gained all my weight.
As for comparing bodies, I honestly only compare my body with those that are attainable for me. For instance, I have a medium-large bone structure. I'm not going to look at a skinny mini with a small frame and go, "ohmygod, I WANT HER BODY!" when I know I could never get it. Most of my friends aren't toned enough for me to envy their bodies (they might be thin, but that's it, you know? unimpressive), though if I had a toned friend who was still curvy and feminine AND had a bone structure similar to mine, I would be quite green by now.