Lumpus notices in his family tree that Lazlo is his son.
The Bean Tree is the episode 38a of the middle season.
Plot
After A Birthday of Lumpus, Lumpus discovers he and Lazlo are related.
Gallery
The gallery for The Bean Tree may be viewed here.
Quotes
Raj: (to Lazlo) "Scoutmaster Lazlo, my cabin's on fire." Lazlo: "Oh, I'm not the scoutmaster anymore, Scoutmaster Lumpus is now." Raj: "Ohhh... (moves over to Lumpus) "Scoutmaster Lumpus, my cabin's on fire." (Camera zooms out to show camp on fire.)Raj: "Scoutmaster Lumpus, there's fire on your shoe."
Lazlo: (wearing Lumpus's scoutmaster hat) I've always wanted to wear this!
Lumpus: I don't look like that.
Lazlo hugs Slinkman