Some things I notice because it's hard not to (muffin tops---still think that's too 'cute' a name for a very "uncute" thing, more like "lard rolls"--men's guts that make them look 9 months pregnant..with twins!--this summer, there must have been a "pregnant men" meeting in town, because I saw a half-dozen of them walking together at one point...actually, might have been some parents of potential students, but disgusting to me that to a person they had that big, unhealthy, heart-attack-and-diabetes-in-the-making gut on them!).
But when I think about it, I guess what I notice first about people is their @$$es ! The bad ones: lumpy, fat, too skinny, showing major pantyline or even cellulite that is pushing it's way through a pair of white (!) knit shorts (I go to Walmart too often for my own good! But I feel like a buff babe when I do!!). The good ones: only because it's sign of good overall muscle tone, mind you. (Seems I notice the "bad" ones on women, and the 'good" ones on men. Hmm...)