“Hard to accept that these imbeciles represent the people in our government,” said Shkreli, using his @MartinShkreli Twitter handle. Earlier, Shkreli invoked his Fifth Amendment right against self-incrimination and declined to answer questions from lawmakers about drug price increases he engineered, such as hiking the price of 62-year-old Daraprim to $750 a pill from $13.50. During the hearing, Shkreli, whose youth and attitude have prompted some critics to label him “Pharmabro,” responded to questions by laughing, twirling a pencil and yawning.