Why do fans chant 'Messi, Messi' at Cristiano Ronaldo?

Football supporters think of creative ways to get under their rivals' skins and one of the greatest players of all time is a big target

Why do fans chant 'Messi, Messi' at Cristiano Ronaldo?
Football supporters think of creative ways to get under their rivals' skins and one of the greatest players of all time is a big target