Now if they could only get them to flash on and off we could have pet-based neon advertising fun. Actually, make them glow bright enough and we could use animals to replace lighting. Of course, I don't think they'd enjoy being strapped to the bonnet of a speeding car as headlights. Also, I initially misread the thread title as 'Can't find your cooch?'. Sure be useful if we could get those to glow in the dark too.
Best idea ever, but needs some tweaking. Sexy women who can't say no... and if they do, they spontaneously combust. Great way to break up with them when you get bored of 'em. "hey, wanna go jump out of a plane with no parachute?" "NO!" -fwoosh-
And by the time they're of age, we'll all be just old enough to be creepy old men that they can ignore. Huzzah, science!
Would be neat, then when they wash themselves and get that crap all into their stomachs, their poo will glow. Then I can step around it easier. Or glow a shrinky old man up and have him run around nekkid