Dead Bean Drop is episode 19b of second season.
In an old time capsule, the Jelly Trio discover that Slinkman used to be a daredevil until a fatal accident that almost killed him.
travia
When Slinkman and Lumpus are about to jump Dead Beans Drop, Slinkman has hair for a split second.
Credits: In the future, two Bean Scouts discover a capsule containing an old Slinkman, Lumpus, Chip, and Skip.
notes
In episode 10 Slugfest it looked like Lumpus met Slinkman when Slinkman applied for a job but in this episode they met when they were kids at Camp Kidney.
Lumpus explains how time capsules work to the bean scouts.
Running Gags:
1) Clam saying 'Cool Stunts'. 2) The Jelly cabin scouts calling Slinkman 'Super Slug'. 3) The Jelly cabin scouts doing their own stunts to try and impress Slinkman.
When we see Slinkman 20 years younger than he is now in Dead Bean Drop,we learn he had an orange afro.
This episode shows that Slinkman had the reputation of being a daredevil named "Super Slug".
quotes
(The Jelly Scouts open an old time capsule) Raj: Ugh! What is that smell? Lazlo: That's the smell of 20 years ago. Clam: History stinks!
Clam: Cool stunts!