What Do You Do With Defenseless Knights?

Now I am not a dragon, but I come to you dragons just to seek a piece of wisdom. I couldn't help but be curious about what you do to knights/adventurers that you leave defenseless in combat. Like you've disarmed them of their sword, spear, etc. Now what?

Do you simply eat them? Imprisonment? A nasty warning to ensure they never return? I'm sure different dragons do it in their own ways. But you have to protect your hoards/yourselves somehow to ensure that humans don't come poking around where they don't belong right?