Maybe it's just because I live in a naice area, but one of the most frequent boasts I hear, alongside the usual ones about reading levels and musical/sporting abilities, is that someone's DD or DS loves olives, which I frankly find really odd (not the child liking olives, but that it's considered something to boast about). Liking olives isn't a milestone, is it? I'm quite bed at middle class parenting, I'd never even heard of NCT until after I'd given birth, but the olives thing really puzzles me.
(Full disclosure, my DD hates olives and thinks they're the work of the devil).