"Emotionally Activated Lip Gloss. Colour changes according to the wearers mood. Begins clear and blossoms into shades of pink."
Brillant! The inventors over at Too Faced need to win a Noble Prize for this stuff. Pretty much, He goes out buys this lip gloss gives it to his lady friend, and BAM, He knows exactly when she wants to have sex. How much easier does it get then that. Guys don't know this stuff, we need indicators, and luckily, we now have them. We aren't smart as a species (man) He is just glad that someone put the time into simplifing the signs.
-He