The feeling of dread one gets, knowing they are about to engage in an 'activity' that will bore them to tears and have no way to get out of it.
Dave felt the familiar chill of foredom creep up his spine as he straightened his tie in the mirror. He made a mental note to never say "oh, whatever you want to do, honey" to his wife in regards to their anniversary ever again.
A portmanteau combining the words Forum and Boredom, to describe the feeling ensued after hours browsing online forums.
I must have clicked on new posts a hundred times these last few hours, I'm completely overcome with foredom.