Patrellium 

A pain in the butt, annoying, agrivating

Jonny was a patrellium today.

Patrellium by Abby McLean January 28, 2009

Expecto Patrollum 

A spell to ward off the likes of annoying forum trolls who rant incessantly and bother everyone else to the extreme.

CompNerd: This game is awful wah wah cry cry

HumbleForumDude: I thought it was okay.

CompNerd: STFU NOOB MY FORUMS!!!

BraveForumDude: Expecto Patrollum!

Expecto Patrollum by Emblem_CR February 1, 2010