hang tight

verb2

1. •
   To grasp tightly.

   • “Well, ya better hang tight cause when these boys take off yull be in fer the ride ofa lifetime.” — 2012
2. •
   (informal) To wait, without attempting to address a challenging, alarming, or dangerous situation, until a later point in time.

   • I'll call you back when I've got someone in the air. I'll need your coordinates at that time. In the interim, you're going to have to hang tight, buddy. — 2011