Its so much worse than a fail that it can only be described by something that a snail probably did.
Jamie- "Hi ill have one fries please"
Matt- "Wow what a retard did he really just say that? Hes a snailure who probably drinks his own cum."
when some one fails at snail trailing
jenny and her friends are having a sleep over
jill sneaks off with jan to jenny's brothers room
jill gives jenny's brother a snail trail (when a girl wipes her pussy across someone's face )
jenny's brother wakes up not knowing what's going on
jill get's scared and pees in his face
jan runs back and tells all her friends and tells then anout how much a snailure jill is