That 70's show.. whats the song?

There is an episode where donna eric hyde and fez (maybe) are in the basement sitting around the table and they start singing a song. what is the song? i cant think of any of the words but i know that they start doing motions with their arms and then it turns into a peace sign that they make. and no it is not the theme song at the beginning so dont tell me it is. its a different song