douchebag
noun
douche·bag | \ ˈdüsh-ˌbag \
an obnoxious, offensive, or disgusting person
I do wish you were amusing and funny. But churlish, immature, dishonest and stupid are the only adjectives that come to mind.
Thread Troll
a person who posts inflammatory, insincere, digressive,[1] extraneous, or off-topic messages in an online community (such as social media (Twitter, Facebook, Instagram, etc.), a newsgroup, forum, chat room, or blog), with the intent of provoking readers into displaying emotional responses,[2] or manipulating others' perception. This is typically for the troll's amusement, or to achieve a specific result such as disrupting a rival's online activities or manipulating a political process