Used Pantsu

Many moons ago, there were so many school girls selling their used pantsu that Japan had to introduce a law to ban this activity.

But the used pantsu fan can still buy "looks like used pantsu" - pantsu which looks used with some sort of dried substance on it - and to top it off, it smells like Mango...
Not sure why mango but probably because "Mango" sounds like "Manko" which is the word for a ladies v-zone.
A few more pics at Tokyo Times.