Malcolm in the Middle Season 2 Episode 25: Flashback
Lois is two weeks late with her period, causing her and Hal to panic and start a big fight, while trying to keep it from the boys. And while Dewey is scared that his parents may split up, Hal and Lois remember the troubles of getting their previous four sons.
Aired 2001-05-20 · 22 min
Malcolm in the Middle: all seasons and episodes