(Read the following lines with Liam Neeson's voice)
Foolish hooman, now there are 3 posible reasons for the snail appearance.
Number 1: It's me, it always has been me looking over your shoulder.
Number 2: You are now inmortal but if the snail touches you, you WILL die.
Number 3: Maybe and just maybe... It's both. Always watching. Always behind. You always knew it, right?? Those times writing, sitting, eating; the feeling that you are not alone. But know we know each other. I know who you are, I know what you do and if you don't do a full 360, no scope, headshot with only thumbs with exaggerated music and the Doritos logo and Snoop Dogg, I will reach you while you sleep.
And I WILL kill you.