Gay people release gay particles. Proximity to gay particles will overtime change ones DNA to mutate to being gay. Gaydars can be made to measure the level of gay radiation people give off. Being Straight, Bi, or Gay is a measurement of the Gay radiation people give off, straights the least, and Gays the most. Closeted Gays can hide their gayness from the electromagnetic spectrum, and thus appear invisible to other measurements but not to gaydars.