Filibuster action: watch it here.
UPDATE, 6:08 p.m.: Home from work, I'm catching up on the feed now. He's talking about tweets. He's reading #DefundObamacareBecause tweets. He could go on forever this way. But he could go on forever any number of ways. A filibuster, with a filibusterer worth his salt, will never run out of material. As the quote in the post title says, it goes on until the speaker physically fails.