I also had to wait for years to learn what conkers are - and I'm still confused. I'd love to know the context/history/culture that DNA was referring to because it doesn't make any sense to me as written
So conkers are chestnuts on a string used for childhood smashing competitions. Ooookay.
But why would Yooden Vranx have "lots of" chestnuts on his spaceship? And why "of course"? Was that something that should be expected from an adult, or maybe specifically a captain of a ship? And why would a child think chestnuts were as special as the weird galactic stuff?
To this day, I think he was referring to something else which got lost or changed in the editing process. Maybe there was a side bar about "cosmic conkers" that got omitted, but the later reference was kept. Something.