(noun)

1. A Facebook Troll is a Facebook user who posts for one or both of two reasons: a) to disrupt; b) to gain attention.

2. One who posts redonkulous comments on friends status updates.

3. Vulgar Facebook Trolls usually confine their comments merely to primitive, profane, off-topic observations.

4. Facebook Trolls spout gibberish in the hope that they’ll either bore or confuse to death those with whom they disagree. The average FB Troll is “a pursuitist who gromulates his adversarial computerists with height defining formulations to the disinterestingest adjunct.”

(verb)

1. Attempts to condescend. The Facebook Troll will seek refuge in condescending remarks that repeatedly scorn his or her critics as beneath – all the while continuing to respond to them.

The verb troll originates from Old French troller, a hunting term. The noun troll, however, comes from the Old Norse word for a mythological monster.

A Facebook Trolls favorite website is encyclopediadramatica.com

Synonyms: Facebook PMS, fail at life, Facebook Thuggin, first comment whore, Facebook, facedonkulous, Anna Bananna, facepalm,

Antonyms: moderators, Adonis DNA, double cheeseburger challenge, Double Decker House Wrecker Blumkin AC Slater, Winning

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

Someone who responds/replies to your status updates: (1) too frequently (2) in a contrarian manner (3) that aren’t meant for them (4) about inside jokes that they don't get and/or (5) only know the status update's author as an “acquaintance” rather than an actual friend.

(Trollus familiarus)

A friend or family member who posts immediately on your status updates with the (perhaps subconscious) desire to make you look like an idiot. They may well think they are doing you a favor.

A fella on facebook that kills it for the lulz.

Someone that feels the need to make a joke out of every post they see.

The action of stalking someone on facebook.