Simple but funny idea!
I like how the mouse input has a little "resistance". Maybe I should consider adding that to my submission, too (I have the same input method: mouse controls x-axis).
Well if you want to add it then the way I did it was by adding the mouse movement to the velocity of the object that is moving (using kinematic bodies). This was also a last minute idea since you were originally going to control using the arrow keys but it seemed a little bit too limited for this type of game.