This game, Floaty Lemon, is basically a just a Flappy Bird clone in zero gravity. Pretty simple. In fact it's so simple I'm struggling to think of anything else to say about it.
Just try it.
You know you want to.

-Controls:
*Press the Left mouse button to blow on your lemon from the direction of you mouse pointer.
*Mashing SpaceBar lets you inhale more air, so that you may continue blowing on your lemon.

Music and some sound effects:
http://musmus.main.jp/english.html