Humorous author pictures
Yes, a group of authors (Đurić, Delibašić, Radišić, or Đuirić, Delilbašić and Radisic, as they signed themselves in the paper) trying to debunk the Metalurgia International journal provided outrageous pictures in their paper entitled: Evaluation of Transformative Hermeneutic Heuristics for Processing Random Data. 

The, up to that point "respected", journal published the paper without any comments about the photos.