Verb: "To makefalse promises about what you can contribute, only to show up with with little or nothing." Noun: "One who does the foregoing (also, "rockfucker")." Refers to the idea of being particularly screwed over by an unfulfilled or exaggerated promise. Origin unknown but maybe inspired by formations like "ratfuck" and "assfuck."
"The Army recruiter we invited to Career Day said he'd bring a pack full of gear for the kids to look at, and then he rockfucked us and showed up with bupkis and a handful of pamphlets."
"Steve said he knew a guy who knew a guy and so there'd be at least two kegs at the party, but he rockfucked us big time and just showed up with a 12 pack of White Claw and a bottle of Cranberry Moscato."
Slang description of an approach to driving that is base, aggressive and fueled by a need for one-upmanship.
Weaving his way in and out of traffic and making moves that others are unable to anticipate, while masterfully putting everyone’s lives at risk, we can see that roadfuckery is a powerfully addictive sport.