Friday the 13th

Friday the 13th is the second half of episode 10 of Season 6. It aired on November 26, 2001 along with the episode Arthur Loses His Marbles.

Summary
Brain doesn't believe in superstitions, even though his friends step over sidewalk cracks ... and even Mr. Ratburn walks around ladders. So when Brain's defiance leads to a string of bad luck, he's stunned. Can he reverse the trend before the unluckiest day of them all -- Friday the 13th.

Plot
PLOT NEEDED