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1.
Having some semen on the tip of your penis and dragging it across an individual's face in a trail like matter.
We went snail trailing at my big brothers sleepover.
by Snail Trailer November 28, 2011
6 3
 
2.
When a woman where's no underwear. Referring to the silver "snail trail" she will leave on places she sits.
"The boys are in for a treat tonight, I'm snail trailing!"
by DJ-Chuckles November 06, 2009
11 8
 
3.
Those really annoying people who, when you're cycling, don't overtake but drive behind you for ages really slowly and menacingly! Mainly old people. Could also apply to high-school stalkers..
"This guy was snail-trailing me"
by Myv November 27, 2006
3 9