Whenever the cartoon uses copyright-infringing materials, someone adds a particular quote from Tim Buckley:
"The thing about copyrights that I guess you don't quite grasp is that whether you're doing it just for fun, or for profit, using someone else's work without their permission is against the law."
Making a crack about Lilah's miscarriage occasionally pops up.
"<x> is not a joke and I have no intention of making light of it."
Changing the credits of other annotated materials as if they're also produced by Blind Ferret Entertainment.
Ethan ends an episode asking Lilah "I still get laid tonight, right?" Up until sometime during Captain N, most episodes/series end with a male character repeating the question.
"HORSE CUM!" — originally just a mondegreen — appears whenever something liquid splashes around, typically "water" colored unusually white. The annotation is guaranteed when that something gets on a character's face.
Gags starting in Super Mario World:
"I fell for hours!" whenever someone is falling for a long time, especially after a Commercial Break Cliffhanger. It's also occasionally subverted with very short falls, where the annotation is along the lines of "I fell for— oh, never mind."
"I am the <Title> of <Alliterating Action Or Adjective>!" Most often used whenever Cheatsy is in a scene (launched by his infamous "Emperor of Eavesdropping" line), gradually declining after the initial run of Super Mario cartoons but still appearing infrequently.
"Don't try <verb>ing in Brooklyn!" Since this is originally delivered by Luigi, adding a "*WHEEZE*" to the end is optional. It can pop up just about anywhere to describe anything that characters are doing or discussing.
Originating from The Adventures of Super Mario Bros. 3:
The audience booing and throwing rotten food as the curtain comes down at the end of an episode. It gets a callback during Mortal Kombat when the characters explore an empty theatre.
Whenever a mummy appears or someone gets wrapped up like one: "WHERE'S MY SON?!" Heck, when the setting is just a desert or contains pyramid-shaped structures, the line is attributed to her off-screen.
"Are We There Yet?" "How many times are you going to ask that, missy?" These two often appear in tandem during any traveling scene. The second question also sometimes appears as a response to other questions, particularly fellow gag "I still get laid tonight, right?"
As soon as Kootie Pie gets noisy, a Kootie Pie tolerance meter appears. It doesn't take long to max out.
Cargo nets deployed to capture characters are automatically labeled as "Nasty Nets".
Because of reused music, one particular cue spurs a "YESSSH!" every time.
Escher is the subject of remarks about constantly relocating his offices, as well as responding to any quip from Guile with "This is where I pull out my gun."
Annotators take notice of vertical pan shots and infer that all subjects are female, due to the frequency of introducing female characters into a scene with full-body pans.
Any close-up or zoom-in on a character's face leads to "No <character>, not the head bite!"
During Audience Murmurs, annotations point out what sounds like the word "wire."
Annotators literally interpret rhetorical remarks like "What's the matter?" or "Tell me about it!" with a paragraph of exposition as if reciting a Wikipedia article. For instance, "What's the rush?" and describing the rock band Rush.
Gags from Captain N:
The purportedly unlikable Simon Belmont frequently suffers for comic relief. When he doesn't deserve it, some variation of "Haha, that'll teach you to <innocent or helpful action>!" will appear. invoked
Whenever a pop culture reference is made, a "Topical" label appears.
Anything from Mr. Clipboard, particularly "SURVIVAL OF THE FITTEST LEONARRRRRRD."
"The secret's inside!"
"Never opened... never enjoyed..." or a snowclone replacing the verbs.
Hatched from Savage Dragon:
In one of Mako's earliest appearances he mocks Dragon with "Savage Squirrel." Since then, anytime Mako appears and laughs it's because that one insult still amuses him. Sometimes he swaps in a different animal and thinks it's newly-minted comedy gold.
The episodes have a nasty tendency to glitch or lag, so when the episode is running smoothly, and then starts glitching without warning, the annotators will claim that a previous action caused the glitching (such as Barbarian punching Dragon so hard that it caused the glitching, or a dam is destroyed causing all of the glitches to flood out).
Running Gags in general:
One gag from the beeupyou days is simulating a TV station's watermark with an annotation in the lower-right corner of the video. Similarly, joke content ratings occasionally appear in the upper-left corner.
Returns after a fashion in Savage Dragon — the source videos have USA Network watermarks which turn into other place names, including references to other annotated shows.
Gags involving use of file formats for audio or video, in the vein of "laugh_track.wav not found" and "reused_animation.gif".
If a series has a noticeable catch phrase, a counter appears for each instance.
If a character has a memorable one-liner, the annotators make it a catchphrase (sometimes mildly misquoting it). Examples include "Haha! Shocking!" from Street Fighter, "How about a fencing lesson?" from Captain N, and "Going out with a bang!" from Sonic Underground (the latter two earning bonus points for not even making sense in context).
Especially where CAD is involved, this mutates into labeled "buckleyboxes" with overly long explanations of a joke's setup and punchline.
"The joke is Yoshi eats everything" throughout Super Mario World.
Every time a character looks stoned (i.e. with droopy eyelids), someone adds some variation on "420 smoke weed everyday". If the character is also smiling or frowning, it may be "feels good/bad man" instead.
"Paused" or "Loading" annotations when the flow of events is disrupted by slow character responses or other lack of onscreen activity.
When a full moon appears in a shot, it will often be given a face to resemble the moon from Majora's Mask, with an accompanying caption like "Dawn of the Final Day, 24 Hours Remain".
THE UNBREAKABLE ANNOTATION. Which always ends up broken. It finally does its job successfully by surviving Kevin's Zapper in the Captain N Season 3 Intro.
But quite possibly the grandest, most continuing, most unabated, most returning, most tantalizingly reoccurring, most unstoppable, most—(AW SHADDUP! We'll never get started!) dynamic juggernaut of all running gags is "PULL. MY. FINGER." whenever someone points.
Fake notes from the production staff point out glaring omissions, only for the staff to shirk their assignments to go drink, have sex, take drugs, or do some other leisure activity.
When animation/script inconsistencies cause one character's mouth to move during another character's lines, annotations will make the latter call out the former.
Fake "This Video Has Been Removed Due To Copyright Violation" notifications (e.g. "This video has been removed due to a copyright claim by the Marx Brothers" when Sonia did the Duck Soupmirror-frame bit).
Characters' anguished groans and disapproving remarks become the reactions of the annotators or a hypothetical test audience watching the show.
Body counts show up when the heroes take out mooks. If buildings or vehicles get totaled, expect the numbers to suddenly skyrocket.
When a vehicle crashes and explodes, the viewers are reminded to "NEVER FORGET".
"Space for rent" on a background tapering off to a large section of solid-colored empty space. Small spaces like car interiors make good targets for this.
"<x> makes me cross-eyed every <expletive> time!" where <x> is whatever just happened or is happening in a shot with a character's face drawn cross-eyed.
Generally rare, but if something gets too self-aware, the annotators will claim that the show is annotating itself.