Smart Alecks are people who are known for their intelligence and wit. They are often seen as wise and knowledgeable, and they often have a sarcastic or humorous attitude. The term 'Smart Aleck' is often used to describe people who are wiseacres, wisenheimers, sassers, wiseaces, wiseguys, and know-it-alls. These terms all refer to people who are intelligent and have a sharp wit, but also have a tendency to be overly confident and sometimes even arrogant.