In this episode Mr. Weed says they have been showing the "Women in the Workplace" video for 50 years. This Episode aired in 2000 and the title shot of the video said copyright 1956. That would mean the present time in the episode was year 2006!
It isn't uncommon for people to round off figures when referring to spans of time. Or perhaps Mr. Weed was unaware of the exact year of copyright for the video.
I agree with wonder boy. Everyone rounds up or down because they don't have to always know what year everything was done. This shoudln't be slip-up at all. How lame is this? If you think this is a slip up then you must think the general idea of talking animation which is cartoons is a slip up in itself. Bad call! Ha Ha Ha. harrassament