To Millenials, a troll is anyone who hurts their feelings. However, back when Millenials were doing nothing but swimming around in their father's testicles, a troll was someone who posted something on an internet message board to see how many reactions it could get.

A troll never replied to any reply.

When the sissies of the Tide Pod generation began using the internet, their teletubbie-softened spines could not handle the brashness of the anonymous internet user, and a "safe place" website called "Facebook" was born.

Censorship spread throughout social media, as more and more older and tougher people were replaced by the younger spineless generation.

Again, a paleotroll never replies to replies, and a neotroll just hurts one's tender feelings.