Nearly every teenager on the planet admits to lying about something—and the ones who don’t admit it are probably lying about that. But what do teens lie about most? Studies show the number one thing teens lie about is where they were (65%, Knox). Also, about half of teens (49%) say they’ve lied about their sexual experiences, 41% are have lied about who they were with, and 42% have been untruthful about their alcohol consumption (Knox).