NATURE

odstěhovat se od rodičů (vyletět z klece); zdrhnout z basy (AmE slang)

1. You know, you reach a certain age and it's time to fly the coop, no time to think about anything other than that very moment. (COCA)
2. Let our childer fly the coop if they want. (COCA)
3. My plan is perfect. I fly the coop when I turn 18. (COCA)