It all began the night before the inauguration, when Teigen presumably jokingly tweeted at Biden asking for a follow back after being blocked by the last president (whoever he was) for the past 4 years.
After realizing that the President followed her, Teigen joked that she should “prob never tweet again†before almost immediately following that tweet with another tweet praising Katy Perry’s inauguration night performance of “Firework,†so it looks like we’re in no danger of Teigen changing her Twitter presence now that she has a new famous follower, thank goodness.