Thin people swinging their hips while walking is “sexy”; fat people swinging their hips while walking is “waddling”.
I have a limp that makes my gait funny. Because I’m huge, people say it’s a “waddle”. On a slender person, that gait would be described solely as a “limp”.
This is an intersectional thing, as the thinner person would be asked all kinds of invasive questions about how their leg got damaged and their support devices, if any. On a fat person, though, everyone assumes that the damage is due to fat.
In my case, an on-the-job injury was never treated right and I will never walk without pain or be able to support my weight properly on that leg again. Hence, the “waddle.”
“everyone assumes that the damage is due to fat.”