As a Verb or Adjective:
1. To be unusual or unexpected and likely to make you feel uneasy, afraid, or even amused. English = (be) strange, (be) weird, (be) odd, (be) peculiar.
2. To be very odd and strange. English = (be) bizarre.
Interactive:
1. Used alone to mean you think that what has just been said or what has just happened is bizarre, strange, unusual or peculiar. English = 'Well, I'll be ...'
Note:
1. A mouth pattern often made with this sign is the same as saying "ba-ba". Indeed, many Auslan signers think of "ba-ba" as the name of this sign. This is why "ba-ba" is listed as one of the keywords for this sign, even though that is not an English word.