The glistening trail left behind after a man pulls his penis out of a woman's vagina and he runs his penis on the woman. Usually after ejaculation as the penis softens and looks like a snail.
I was banging Anne last night and after I came I pulled out and gave her a snail trail on her stomach.
the act of using the hand/forearm to rid the nose of runningsnot leaving a glistening path hence the name "snail trail". the trail usually begins on or near the index finger and runs at least half way up the forearm.
"I didn't have a Kleenex, so I just...snail trailed my snot and hoped that it was gone before i got to my elbow.