Then he sent a messenger to his father to ask what he was to do next.

Tarquin was walking through a cornfield.

He made no answer in words, but with a switch cut off the heads of all the poppies and taller stalks of corn, and bade the messenger tell Sextus what he had seen.

Sextus understood, and contrived to get all the chief men of Gabii exiled or put to death, and without them the city fell an easy prey to the Romans.
Tarquin sent his two younger sons and their cousin to consult the oracle at Delphi, and with them went Lucius Junius, who was called Brutus because he was supposed to be foolish, that being the meaning of the word; but his folly was only put on, because he feared the jealousy of his cousins.

After doing their father's errand, the two Tarquins asked who should rule Rome after their father.