It has been pointed out that, while Riff is quick to attack Aylee, Sam, and Gwynn for being possible dangers to humanity, his own Mad Scientist experiments probably have a better chance of annihilating the human race than anything. The trope was used in this strip:
Riff: I hope Gwynn learned "Gwynn shouldn't mess with powers beyond her control!" (the device in his hands starts beeping) Uh-oh. You guys might want to jump up and run away, there may not be time to get a safe distance from the radioactive ... (the beeping dies down) ... never mind, it fixed itself!
Kiki the utterly scatterbrained ferret, whose specialty is Comically Missing the Point, sometimes (though rarely, because she tends to be too nice) voices the opinion that other characters, including resident schemers Dr. Schlock and Bun-bun, are "not very smart" or "get confused easily".
In "Fortune", it turns out Torg and Aylee have suddenly become rich. Gwynn, who doesn't like Torg (at least openly), acts unnaturally nicely towards Torg after hearing this. In the next comic, Zoë (who does like Torg, so much that Gwynn has recently before this been telling her she has to stop unknowingly dating him) is hugging him to congratulate, and Gwynn goes under her breath, "Ugh. Laying it on a little thick aren't we Zoë?"
When Schlock, intending to blackmail the clowns at a circus where he's on security detail to get them to cut him in on their illicit brewery, discovers that his boss has already done so (since Schlock outed them several strips prior).
Security Chef Zysk: I'd fire you for it, but I'm too drunk to pronounce hippo-whatever.
Tycho has very different standards on how to buy a television versus computer parts. The Rant confirms the same thing, with Tycho explaining he doesn't care about TV sets the same way he cares about monitors, or other computer stuff.
And The Rant in a later strip talks, at length, about how you shouldn't judge someone on how they feel about things, but on how they act, before concluding "and if you feel differently you’re a jerk and I hate you."
"We were named by scientists, not writers or cartoonists."
Living with Insanity had an arc where Alice had to deal with customers who were rude, overly demanding and blamed her for things she couldn't control. When David takes her to a cafe after work, she does this.
At the end of the "Love and Space" arc in The Inexplicable Adventures of Bob!, Voluptua announces she will clear Galatea of all the charges against her if Bob can just get her to shut up. Zippobic chuckles ruefully in the background, as his main problem with Voluptua is her endless speechmaking.
In The Order of the Stick strip "Case In Point", Haley points out that one of the traits associated with the Lawful alignments is a willingness to enforce one's own beliefs on others. Durkon and Roy, the two most lawful members of the Order, disagree... and then tell her to stop expressing such crazy ideas.
Rival Angels sees best friends Sabrina and Sun taking in a movie after work, having snuck in their own food and booze. While waiting for the commercials and previews to end, Sabrina falls asleep and starts softly snoring. Sun turns to her and...
Owen: You're both abrasive, know-it all loudmouths who like yelling and making people wrong. Fang: *yelling* You're wrong and I'll prove it!
In Homestuck, Caliborn expresses his hatred for the comic's tendency for long, meandering chatlogs... in the form of a long, meandering chatlog. Naturally, when this is pointed out, he shifts the blame, claiming this as an example of how "YOu PEOPLE SuCK ME INTO YOuR BuLLSHIT".
Also happens early on when Rose assures the readers of her GameFAQs walkthrough that she won't waste their time with Purple Prose...in a spectacularly overly-dramatic, purplish way.
Karkat Vantas takes a turn when he spends an entire memo chewing out John and Dave for flirting with troll girls over Pesterchum...then, shortly afterward, his attempt to rip into Jade is interrupted by his own future self showing up white knighting for her, in a fashion loaded with Ship Tease. Dave's reaction to this is:
?TG: ahahahahah oh god ?TG: dude i cant believe you were just getting on our case about hitting on the troll girls ?TG: and then literally the very next memo you are slobbering all over jade ?TG: thats just perfect hahahaha
Jake gets another, much more elaborate one later on when he sends a long, rambling monologue to Jane... all about how Dirk is too needy, has no idea how to interact with other people due to growing up on his own, and is self-centered enough to keep sending him long, rambling monologues instead of actual conversations. And he has no self-awareness whatsoever!
In the Paradox Space story "Three out of Five Hats", Rose calls Dave out on peeking into her unpublished novel and making a rather lazy "review" of it, and Dave answers by calling her out on peeking into his unpublished reviews.
Katamari opens with the Prince accidentally breaking a lamp and his father lecturing him about it. This is, of course, the same King of All Cosmos who has destroyed the heavens several times.
King of All Cosmos: We cannot imagine being so reckless around something so precious.
Ramona [Dope Slaping Richard]: You're doing it again. Richard: Doing what? Ramona:Imagining things without people's permission. Richard: You do it as much as I do. Ramona: Of course I don't. I'm minutes older than you and much more mature. [in Ramona's Imagine Spot] Ramona: Now lads. You may stop fighting over your mistress. There's enough of me for everyone. Lillian: Excuse me?
In the controversial PVP Online strip "Jesus Kills", a parody of the Jack Chick tract "Dark Dungeons", a distraught Francis goes to Cole to tell him that Brent, who was expelled from their prayer for being gay, killed himself (although Francis didn't stay around long enough to see that he was mistaken). Cole then tells Francis to forget about Brent because, "Brent was a sinner. Just like all the men I'm secretly dating."
Duane decries resorting to violent conflict and says that negotiation must solve the issue shortly after losing his temper and punching a politician in the face. His brother immediately calls him on this.
The usual formula is reversed by Iori here:
Iori: If I ever meet the two-toe who did that to you I'll knock his teeth out! Jivi: I hit him with a stool. Iori: Well, violence is never the answer.
In Goblins, Bowst calls Forgath "Mr. Can't Wait to Brag About His Level", when he's the one who couldn't wait to state his own (a whopping level three) and Forgath was just responding to this. Bowst is clearly too dumb to notice the irony.
Stand Still, Stay Silent: General Andersen complains about "old people" when listening to an old couple berate a civil servant. Two pages later, he opts out of a dangerous assignment because:
In thisSkin Horse strip, Tip worries that he's self-centered, unempathic and has poor listening skills ... all of which is clearly much more important than whatever Sweetheart's problem is.
In Dating A Team Magma Grunt, Aqua Grunt calls Magma Grunt a deviant for having a 13 year old boyfriend when she had just been flirting with said 13 year old.
In The Bedfellows strip "Next Door," Sheen's noisy neighbor apologies for his loud music as kindly and well-spoken as possible. Sheen tells him to "talk like a normal person and stop being an egotistical jerk!"
In Maggot Boy, the armless martial artist Noemi gets called out for calling Owen a "one-armed midget," but takes it in good humour.
Owen: One-armed? You really wanna go there, nubs? Noemi: Heh. Touché!