One of the worst feelings in the world is when you're just chilling, listening to some music, maybe dancing a little and then you drop the taco you're eating on the floor.
Scoop it up, it will be fine.
I always go with something i learned from my dad which was "Ooops, landed right on a clean piece of paper" which is something he said the Army cooks always said anytime dropped food on the ground. Guys!