Watch 5 hours of cat videos in one sitting. The endorphin rush will be intense.
Stare blankly at the screen for 10 minutes, pretending it's a Zen koan.
Read 10 articles on the same topic, only to forget what it's about.
Get lost in a 3D video game for 5 hours, only to remember you're still hungry.
Learn 50 new words for "procrastination" and use them in every sentence.