punctuation
Explanation
The Joke
The comic presents a single-panel concept: "My Preferred Comma Method: The 'End-of-Sentence-Reservoir' Comma." A woman is shown typing at her computer, and her text reads: "The Oxford Comma despite being preferred by most indeed ritualized in many circles both slows down the writer by requiring additional punctuation punctuation which could be deployed more efficiently as will herein be demonstrated and removes the reader's freedom to understand interpret and enjoy the text.",,,,,,
The passage deliberately omits all commas from where they would normally appear in the text, and instead dumps them all at the very end of the sentence as a "reservoir" -- a stockpile of unused commas appended after the period.
The Humor
The joke is a playful jab at the debate over the Oxford comma (the comma before "and" in a list of three or more items). Rather than taking a side in the classic grammar war, the comic proposes an absurd third option: don't use commas at all within the sentence, but to satisfy comma enthusiasts, dump all the commas you "saved" at the end. The resulting sentence is intentionally difficult to parse, which ironically proves the opposite of what the text claims -- it demonstrates exactly why commas are necessary for readability. The humor is self-undermining: the method's own demonstration is its best argument against itself.
References
The Oxford comma (also called the serial comma) is a perennial topic of debate among grammarians, writers, and style guides. The AP Stylebook generally omits it, while the Chicago Manual of Style recommends it. The debate has become something of a cultural touchstone and internet argument staple.