Ribaldry. What a great word! I stole it from The Absorbascon (after I looked it up, LOL!)!
Batman could learn a lot from Amazing-Man in how to cultivate the perfect boy sidekick.
First, you need villains who like to drug and enslave sidekicks... Stripping and branding is always an added plus... If all else fails, push him to his knees and slip him a Mickey... "Special" pills. Heh.
Sometimes you get lucky: And they don't require any persuading...