To wound someone's neck or be wounded in the neck to the point of bleeding, much like Charlie Kirk's bullet wound. The way the wound is inflicted and the otherwise severity of the wound are not relevant, only the location.
"My fucking catkirked me bad today, I was just trying to kiss him but he wasn't having it."
The performative online (and increasingly offline) ritual of treating the statistical possibility of catching a random bullet as though it were the weather forecast: casually mentioned, mildly dramatic, and never actually surprising.