Headcanon Meme?
Sometimes we have to make shit up. Not big shit, necessarily, but playing for extended periods (sometimes outside circumstances usually depicted in our characters' canons) often necessitates some bullshittery. Sometimes things like your character's favorite food or best subject in high school come up, and one can only answer "I don't know," or "Fuck off," so many times.
How Ve Play Ze Meme:
-Post with your character journal
-Ask somebody a question you think they'd had to use headcanon to cover
-They respond with the answer, and whether or not it's headcanon
-You ask again until you strike canon
-They do the same to you in your thread
-Yes, really