Frankie has mastered this game to perfection, so I'll use her technique as an example.
The game is quite simple:
Get up early in the morning, way before the farmer. Find a place in the barnyard where you are clearly visible from the barnyard gate. This will make the game more suspenseful for the farmer. Pretend you have passed out and lay still on your side for full impact. When you hear the gate open, hold your breath so it looks like you aren't breathing. When the farmer gets near you, be still! Let her reach down and call out your name longingly, then casually raise your head and and say, "Do you mind, I was just napping."