Dilingerlives has written a fantastic guide to the Physics of of the Gay World.
Star - A gay guy who is of legal age and is an active club-goer.
Mass - The relative attractiveness of a given star is measured by its mass.
Gravity - The force that causes eyes within a certain region to fix on a particular star. A star's gravity is directly proportional to their mass, and can be measured by the escape velocity of the star.
Active lifetime - The most productive period of a star's life is the period of time when the individual's mass can fully support the amount of gravity that is experienced. This is an inverse ratio. A star with a greater mass, and hence a greater gravity, can support the mass for a much shorter time and will become a dead star much earlier.
Go read the rest :)