Near the end of the episode, during Professor Farnsworth's trial, while Bender is speaking to the jury, at one point the camera goes to a view from the back of the courtroom. If you look at the row where the others are sitting, you can see Bender sitting between Fry and Leela, even though Bender is also standing in front of the jurors' box. However, when the camera goes back to the front of the courtroom, you clearly see Fry sitting next to Leela in the row behind the Professor.
Professor Farnsworth dumps "microscopic nanobots" into a toxic puddle. Nanobots, by definition, are nanoscopic, not microscopic.