Your composition length.

Song to pick one 

In group games, to pick one among many, the "inky pinky ponky" song, or a song similar to that.  For each word they point a person, the person to get the last word is picked up for the task. The person who sings the song must start counting themselves first.

You are the composer

You are given freedom to choose song of your choice. Hence number of words in the song is also your choice. There could be 2, 3 or 4 players at the maximum in the game. 

Question

 You have to compose shortest possible song.  How many words will your song have, so that you get picked up for the task always?