“Slug slime trail” is that of a man who “Acts as if he has a pair of vaginallips that are dragging the ground and getting cut up so he is in pain and complaining”
“I know why Tyler is always complaining you have that slug slime trail behind you”
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.