(Part 1 can be found at this link.)
Some comics for which we could not answer “What is the joke here?” but OTOH could not in good conscience call a clear CIDU and devote a full daily standalone to.
No, we haven’t any idea, at least not if it’s supposed to be clever or a punch line. And does that mean the joke here is just … “What if there were traffic cops in outer space!”?
Shoehorning in a lovely Macanudo, not meant as funny but it claims to not be surreal either!
This one also may not perfectly fit the premise: I sort of see a joke, and it’s sort of funny. But mostly the point seems to be just contemplating the sad aspects of the absurdist situation.
Here’s one that Grawlix says showed up in his Facebook feed; apparently posted by the cartoonist, asking his public whether the cartoon makes sense. It probably does — there are good suggestions in the Facebook comments — but for some the main impression is just how strange it must be to meet this locomotive guy!
This one qualifies, not for absurdism precisely, but for startling incongruous backstory imagery. She’s going out, and her parents say “Don’t be late [getting back]”, all of which is perfectly normal — except she’s in a battle tank!
A GoComics commenter adds “Pero pasatelo bien” (“But have a good time”) — reminding me of my high school girlfriend’s mother, who would usually say “Be good! And have fun!”.
Comics I Don't Understand 
He hit the earth and didn’t stop. It’s embedded in the car’s grill.
With the train guy, I suspect it was inspired by the times you run into someone who still goes by a childhood nickname that seems a little too kiddie, like a guy who insists on going by Bobby instead of Bob.
A promising idea in the comments for the Choo-Choo one, repeated in a few variants, was that the other person had addressed him as (or he had been introduced as) “Mr. Train”, and he is now saying, Oh just use my first name.
As Beckoning (1) says, the pilot in Carpe Diem hit a planet and kept going.
I thought the Macanudo was a bit funny. People use “surreal” loosely and he’s calling them out on it.
Bacon is a classic example of an anti-joke. I don’t think it’s meant to be traditionally funny but to deconstruct the humor. It’s not unlike your comment on the “Choo Choo” cartoon; pointing out the absurdity of a common premise. Bojack Horseman did it better, though.
I think the AAGGGHHHH is perhaps subtly (or not) political in nature. Some South and Central American countries are stereotypically wracked by military and rebel juntas cavorting on public streets, and so the gag might be that this is such a commonplace circumstance that life goes on and kids go out and have fun, but with military gear. The US isn’t there, yet, but there’s no shortage of noisemakers threatening such shenanigans if their candidate doesn’t win the next election.
I used to live with horses, and I can tell you two things: 1. They eat a lot. By which I mean they spend an awful lot of time eating. I would say at least 8 hours a day. They spend all day in the pasture eating grass. Then you have to put hay in the stalls so they can eat at night. 2. Never once has a horse asked me to manage the utensils for it. They just bend their head down and pick up the food with their lips or teeth. This would be the first horse who knows about restaurant table manners.
I like the Macanudo strip.
What do you make of the expression shaking the hand of Mr. Choo Choo? He doesn’t look happy to meet him.
I’m still chewing -Chooing? on that comic. Why a train?
Mark in Boston – Like people – when they have nothing else to do, horses eat. :-)
Given the penchant for absurdity, I should take the AAGGGHHHH that way. But when I saw it, I immediately went to the trope that parents are trying to protect their little girls, so she wasn’t allowed to drive around in a normal car, but only one with tons of extra armor.
Don’t talk to strangers. Be home by 11:30. Take the motorized howitzer…I had it gassed up for you.
I agree that the Bacön comic is (at most) only “sort of funny”. What I don’t understand is why Millsap bothered to include a caption below the drawing. The gag (such as it is) is fully communicated by the one line of dialog, and the artwork makes it clear what the scene is showing. That caption seems to be completely unnecessary. Is there some pun or contemporary pop culture reference in it that I missed?
Late observation: the “cow catcher” presents as a rather forward beard. Or maybe we can call it Lincolnesque, with the smokestack serving as stovepipe hat.
I’m still chewing -Chooing? on that comic. Why a train?
Now look, alright, I catch ona why a horse, why a chicken, why a this, why a that…I no catch ona why a duck.
larK @ 12: Well, never mind that. Just keep going until you come to a wire fence.
That “why a duck?” routine pops into my head way too many times…
Gawlix – I’m alright – how are you?