WWYFF stands for 'Who would you fall for' It's basically a love story quiz.
Wwyff = Who would you fall for WWF = either the World Wrestling Federation or the World Wildlife Fund and the controversy between the two.
I'm not sure about WWF, but WWYFF quizzes are Who Would You Fall For quizzes. They have different people results as they usually follow a story line, and it would show who you would fall in love with if it were real basiclly.