Pareto Optimal 

When two guys work as a team instead of independently to hit on women; thus getting more and far better looking women than they would have apart.

See Wingman or Wingmanning

Working together, Kevin and I talked these two girls who should have been out of our league into joining us for an Eiffel Tower - it was so pareto optimal.

Pareto Optimal by Ryanatcollege May 16, 2005

Pareto optimal 

A sophisticated way to say, "Life is not always fair"

Person A: How come Hillary Clinton didn't win the 2008 primaries?

Person B: Well...life in many ways is Pareto optimal. Besides I heard from someone that her campaign slogan was, "Anarchy is my policy for men."

Pareto optimal by paisleynotes November 2, 2009