Huck spends some time describing the beautiful surroundings on the river. It's quite lovely, so check it out.
Also, he and Jim tend to be naked. A lot. Just go with it—it's part of the whole "being one with nature" thing.
One morning, just as it's getting light, Huck finds a canoe and paddles to shore to look for some berries.
Just then, two men come tearing through the bush, running toward the water. He thinks they're after him or Jim, but it turns out they're on the lam themselves.
Of course Huck, having a soft spot for criminals, helps them hide and takes them aboard the raft with Jim.
One of these guys is old, around seventy, and pretty ratty-looking. The other is around thirty, and equally ratty.
We soon see that these guys don't even know each other; they're just two criminals who met while running away from the law and decided that working together would be more lucrative than trying to scam each other.
The younger man reveals that he was selling a kind of toothpaste that accidentally-kinda-sorta took the enamel off people's teeth.
The older man got in similar trouble for running a scam himself. He ran a "temperancerevival meeting" (which is much like Alcoholics Anonymous, except without the anonymity and it's actually more a scam than helpful in any way) until it got out that he was quite the drinker himself.
So that was that.
Back to the present: the young man starts crying and using ridiculous words like "Alas." He reveals that he's actually royalty.
A duke, in fact.
Actually, he's the Duke of Bridgewater.
Of course, this means that Huck and Jim have to call him "Your Lordship" and serve him and all that jazz.
The older man raises his eyebrows, calls the duke "Bilgewater," which is great, and declares that he himself is royalty, too.
What a coincidence! The funny thing is, this guy is actually a king (Louis XVII of France, he says). In the rock-paper-scissor world of fake-titles means he crushes the tar out of the duke.
Jim gets right to worshipping him, too.
It doesn't take Huck too long to realize that these guys are total liars. But Huck's a smart kid, and he knows that the easiest way to get along in life is to not cause too many quarrels.
If they want to be called "Your majesty," it's no skin off his nose.
This, he says, is something he learned from his Pap; with people like this, you just need to let them have their own way. So he doesn't tell Jim they're lying.