Two heads are what?

#TwoHeads #DoubleTrouble #Twinning #TwoIsBetterThanOne #BrainPower #TogetherWeAreStronger #DynamicDuo #ProblemSolvers #TeamworkMakesTheDreamwork #PowerofTwo #InSync #UnbeatableTeam #ComplementarySkills #TwoMindsOneGoal #TwoHeadsAreSmarterThanOne