no, not big apple, but the big "Aaaah?". you know, when another person says 'aaaah?', it doesn't necessarily mean he/she wants you to repeat what you've just said. but it is actually to buy some time. example:
woman : i saw you with a lady yesterday. who was it?
man : aaaaaah?
*damn, what should i say? erm, cousin cousin*
woman : who is she???
man : oh, just a cousin of mine...
woman : oh. but you never have mentioned about her before this... why?
man : aaaaaaaaaaah?
*tricky one. lie lie lie*
woman : why you never mention about her? aiyo pekak la you.
man : cheh, because she's not that close. i don't even know her that much.