Slow down means lessen the velocity or decrease the speed! In relation to a Teenager's life, slow down when it comes to love. Don't go in a hurry to have a girlfriend or boyfriend especially if you're still studying or schooling. First, finish your studies up to college, and have a job for yourself, before plunging into having a relationship with someone! Slow down, take it slow to avoid having a baby out of wedlock, or to avoid getting pregnant at an early age!