Pointing with the Thumb is a general custom in Indonesia.
Do you know: People in Indonesia consider it rude and impolite to point with the index finger.
The members of both the Hindu and the Muslim faith in Indonesia, consider greeting or using the left hand for social custom unclean and improper. More importantly, if one wants to point at something, it is important to use the entire hand or the thumb with the other fingers pointing inwards as part of their custom and etiquettes.
