This app was mentioned in 3 comments, with an average of 1026.67 upvotes
If you tap the android version in your phone settings a few times, you get a coloured circle. Tap it and it expands into a lollipop (with the word "lollipop" on it). It changes colour every time you tap it, but if you tap it a few times and then tap and hold for a while, when you let go you get flappy android.
It's hard as shit. My top score is 4.
Edit: I should have specified this only works for Android Lollipop (5.0 and 5.1). For everybody with an older version, sorry!
Edit: damn, this kinda blew up overnight! Did my expect you guys to like it that much :)
EDIT FOR THOSE WITH KITKAT: there is apparently a version of the game compatible with KitKat
Credit to /u/jrummy16
I back ported the game with some added features to Android 4.0+. Download Lollipop Land from Google Play
end shameless plug