How do you flip?

I do it one-handed, squeeze a finger between the flip and then flick of the wrist.... this technique became easier when I added a case
 
I don't really flip except when I want to show it off. Then one handed with flick of the wrist.
 
Wow! I didn't know there could be different ways to flip! This phone is changing everything! So cool!
 
I find myself using two hands. A younger coworker liked my phone but then called me a 'boomer' when I closed it with 2 hands. lol.
 
I saw a video with the speaker snapping his shut with a very loud snap and I could not help thinking that a phone is not made to close so hard. I fear we're going to hear all about how the phone hardware doesn't last long because all these people are harshly snapping their phones closed. Really? This guy was definitely well over kid age and for me it doesn't matter what a phone looks or works like, it's not a toy.