Cap functions as a one-word fact-check in comment sections. Someone claims they benched 315 on their first day: the replies are "cap," 🧢, or "stop the cap." It is quick, playful, and rarely genuinely hostile — closer to "yeah right" than "liar."
"Stop the cap" demands honesty; "that's cap" labels a specific claim false; "no cap detected" ironically certifies truth. Because the cap/no-cap system is so widely understood, it is one of the most common engagement patterns in comments — bold claims practically farm cap-checks.
