In Homer's Book 17 of The Odyssey, Odysseus disguises himself as a beggar, and enters his home. Telemachus instructs Odysseus to go into the banquet hall where the suitor's for Penelope's hand (much to her chagrin) remain gathered, eating her food and infringing on her privacy.
This has been going on for some time. After all, Odysseus has been gone for twenty years, as the gods have detained him, and most of these men believe that Odysseus has died, and his great wealth and beautiful wife are available for the taking.
When Odysseus enters the hall, many of the suitors take pity on the beggar, but Antinoös and Eurymachus are rude and disdainful. Antinoös even throws a footstool at Odysseus, in no way suspecting that the seemingly pitiful creature before them is really the great hero, Odysseus.