An lgtm fail is what happens when someone approves a pull request without actually reading it and the code later breaks production. The phrase captures both the action — the lazy rubber-stamp — and the consequence: a bug, an outage, or a security hole that traces back directly to a drive-by approval. It's the ultimate dev accountability moment, immortalized in post-mortems and passive-aggressive Slack threads alike.
That outage was a classic lgtm fail — nobody actually ran the tests.
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