atm
Explanation
The Joke
A group of people are discussing how tedious it is to say the full term "ATM Machine" (which is already redundant, since ATM stands for "Automated Teller Machine"). One person suggests shortening it, and another proposes simply calling it "Service." The final panel reveals their solution: the local ATM has been renamed to a string of gibberish characters -- an absurdly long, unpronounceable jumble of letters -- which is the opposite of a helpful abbreviation.
The comic satirizes the human impulse to abbreviate and simplify language, which sometimes backfires spectacularly. Instead of arriving at a shorter, more elegant term, the committee process has produced something far worse than what they started with. This is a common outcome in design-by-committee scenarios where the attempt to optimize actually makes things more complicated.
The Humor
The punchline works through the absurd contrast between the stated goal (making the term shorter and easier) and the actual result (an incomprehensible string of characters that is exponentially harder to say or remember). The comic also slyly pokes fun at the common pet peeve about "ATM Machine" being a redundant acronym -- people who complain about redundancy in language often propose solutions that are worse than the original problem. The reveal of the ridiculous name on the sign is a classic visual punchline that rewards the reader for following the setup.