The Lie Detector Test

A blonde goes to a lie detector test where instead of it beeping it makes them explode.When she gets there she meets a red haired girl and a brown haired girl.The red haired girl goes first.She says i'm the prettiest girl in the world.She explodes.Next went the brown haired girl.She says i'm the sexiest girl in the world.She explodes.Finally the blonde goes.She says I think.She explodes.