But some women—40 percent according to a 1990 survey of 1,292 women—do, like men, expel a substance from their urethra during orgasm, especially orgasms from stimulating the G-spot region. The nature of this “ejaculate” has been the source of extended debate—urine or not urine?—and diverse scientific inquiry. One woman devised a home experiment in which she swallowed a tablet that dyes urine bright blue. She then “inspected her wet spots,” which she reports were either colorless or faint blue. One research team collected specimens of “the expulsion” and asked outsiders to characterize it. It is a testimony to the generosity of the human spirit that these volunteers both smelled and tasted the specimens. (Several specified that it “had no urine taste” without further specifying how they would recognize this taste. One likened it to watered-down fat-free milk.) Chemical analyses of female “ejaculate” have differed. Two labs concluded the samples were the same as urine; four found significant differences.
