Fictional characters cosplaying as other fictional characters.
ginger harry potter in a cloud of miasma
Ron thinks he's Harry Potter.
Ron, with Harry's scar, stole his red chalk and says "Hehe".
Ron stole Harry's chalk!
ron steals harry's chalk
someone about to hit someone else with a rock
Homestuck fandom in general
Guy dressed as Devil goes into apple fan party
Doodle or Die is the game of "telephone" with drawing!