The intermingling of the sexes (males blue with females pink makes purple) in one of the followingactivities, depending on context:
1. innocent conversation 2. sex
On our school band trip, the teacher told us not to go into the room of the opposite sex, but we were still purpling anyway, because they didn't care, and they we our friends.
Purpinkle is that shade of purple/pink that isn't really pink or purple, its a mix. Think of purple and pink combined and you'll probably see the shade.