HereAgain:
The way fat accumulates is entirely genetic and nothing to do with where you wear clothing. Your waist band sits where it is comfortable, as the fat accrues, not the other way round. Sorry folks!
I'm not sure that's correct, the shape and development of muscle and bone cells are absolutely influenced by mechanical load, so it's not ridiculous to suggest that fat cells could be also. There are plenty of anecdotal cases of heavy people who sit a lot getting flatter buttocks, so I wouldn't discount it.