At times, not doing tarof can be considered very rude and almost offensive. For example, If one offers a present that you already have, telling the truth would be very rude. Likewise, if someone offers to take you for dinner, you must refuse at first
, professing their great kindness. This is normally be two to three times, but one must be careful not to do it in excess, and to always end in a yes, so as to avoid offence.
It is not expected of young children to tarof, but most Iranian children over the age of ten are aware of, and engage in, the custom.