UPDATE: Jake Kern on Google Plus provided the winning caption. Thanks to all that participated.
Citrus as Contraception. Yes back centuries ago, women would use citrus rinds as an early form of contraception.
Now I had captioned this with a comment from this middle ages orange peddler but figured I would give you all an opportunity to showcase your creativity. What do you think he should be saying to entice people to buy his oranges given the topic of this cartoon?