The act of browsing random open events on Facebook and confirming your attendance. Once done, sit back and watch the abuse/confusion unfold!
High impact targets are those which feature few guests or are of little relevance, for example, a child's 1st birthday party, a girlie night out (as a male), or perhaps mix things up by being the only white guy at a party.
"Steve's event list on Facebook is looking pretty full"
"Yeah, I think he might be Event Bombing"