Walking into a bar and flashing your ID with too much confidence, because you know fine well that the date and picture on the card are yours.
Being the perfect age to distance yourself from school kids, but you still qualify as a 90's child. Meaning you don't feel ancient when you see that the Disney Channel is still showing re-runs of Fresh Prince of Bel Air, despite Will Smith not making an episode for sixteen years.
Not worrying where or at what point you lost both your dignity and your phone last night, in between downing drinks and singing too loudly, because someone will be able to fill in the gaps, as soon as the photos are uploaded to Facebook.
Being 19, is, perhaps, a blessing in disguise. Sooner or later, the big 2-0 will be looming, and that will be a depressing year.