Joke name: Rejected Pepsi Can
Orgins: Started a couple of months ago as an observation in an episode of Person of Interest. Basically, the Irrelevants noticed that Reese mercilessly throws away a Pepsi can during an episode. This make the Irrelevants conclude that Reese dislikes Pepsi, and thus the inside joke was made.
Relevance when used: Generally Pepsi is now considered the Irrelevant’s drink. Also, the Rejected Pepsi Can does have a blog, but it is rarely used.