The ticket said latency issues. The monitoring showed dropped packets. The postmortem would reveal a misconfigured TTL that had been wrong for four months. It was DNS. It's always DNS. Every network incident in the history of computing has either been DNS or something pretending not to be DNS until the fifth hour of troubleshooting when it turned out to be DNS anyway. This shirt is for developers and DevOps engineers who've learned to check DNS first, every time, regardless of the symptoms, the error messages, or the confident assertion from a colleague that it definitely isn't DNS this time. When the site is down: DNS. When the site is up but slow: DNS. When everything looks fine but one specific customer can't connect: DNS. The universe propagates at its own pace.