I think this lady has a nice bum, and legs
Maybe if she wasn't trying to crack a walnut between her buns when that picture was taken then I'd get a better idea of what her arse is really like.
And this thread should be called best buns
on AdultWork. Seeing as all the other threads along the same lines are about pairs of body-parts - i.e. best legs
; best tits
; best buns.