Payne just can't resist shouting out hundreds of funny death threats whenever he runs into the hero or tries to run into him with a truck in a Press X to Not Die instance. He even shouts them when falling to his death.
When Jian finds out you're alive, he gives us this gem: "So, apparently you are still alive and we won't all have to die excrutiatingly painful deaths. Exciting!" All said in a tone that makes us wondering if he's being sarcastic or not.
On your next playthrough, take a closer look at the mission titles and descriptions. Some of them are pretty dang funny.
In one mission, you have to blow up half the trucks in town. The description is "Blowing up their stuff is an excellent way to get their attention." In a sidequest, you have to blow up the other half. The description for this one is: "You've stopped the looting. But blowing up their trucks is fun.
One sidequest has you tearing down (read: shooting down and/or stabbing) wanted posters with your face on it. There are three seperate sidequests for doing this, one for three different towns. The first one is called "You've got a fan". The second one is called "You've got more fans" and has the description "Somebody's put up wanted posters of you. In a ghost town." The third sidequest? "You must be famous".
One mission takes place on the obligatory train level, which gets blown up at the end. The next time you take a train, what's the mission called? "Try not to blow this one up".
Upon entering the Lower city and clashing with the Katakara clan for the first time, Tamiko claims they're just a myth. Jian gives a legendary bit of snark in return.
Tamiko: That's just a story! There's no Katakara clan anymore.