- Alex's dorm room
Dan and Alex do a sword fight with empty soda boxes, then Stephen, Alex and Dan practice how to take care of a stab wound to the chest using a first-aid kit. Afterwards, Stephen tries to scare the crap out of Alex by hiding under his bed, only for the fact that Alex HAS A KNIFE! He explains that he heard Stephen walking into Alex's room while he was in the bathroom, and looked in the hallway to see if he was there, but he wasn't there. Later on, Alex gets a visit from Ian, who they haven't seen in a long time.
- Alex gets Stephen back for this and all of the other times he tried to scare the crap out of him on the bonus video for day 521.
- Ian was first seen in a photo on day 63.
- A clip from this video was used on the Favorite Fan Moments video for day 500.
- Stephen: "How'd you reverse my trick!?"
- Alex: "With a knife!"