snail trail

noun3

1. •
   A trail of snail slime, left behind by a snail as it slithers.
2. •
   (slang, vulgar) A streak of vaginal lubrication (or discharge) left behind on a surface.

   • Once I even touched myself and left a snail trail on her washcloth. — 2012
3. •
   (slang) Synonym of treasure trail.

   • Britney Spears is now slightly cuter given she has put on a few kgs. However she has got rid of her snail trail.....which was quite a turn on. — 2007