Watching of the series Naruto, (or any other anime) in which the prequel to a battle is filled with non-important filler.
J.D. "Hey Hank, see the new Naruto the other night?"
Hank "Oh my god dude, there was so much Naruto flashback syndrome, i couldn't pay attention to it for more than 5 minutes"
J.D. "I know dude, the Naruflash on that has gotten out of control, I don't care if the Log's got a history too!"
Ditching ones friends to be assaulted by the Horde on Left 4 Dead or any other multiplayer game which requires everyones full teamwork and cooperation. Usually resulting in the deaths of all teammates but said ditcher. Also, betraying ones friends by lighting them on fire with any in-game incendiary weapons.
Anthony Left 4 Help last night while I was being attacked by the Horde, then decided "help" more by throwing his molotov directly at my feet and surrounding zombies.