Talking continuously/non-stop. This comes from Cockney rhyming slang - 'Rabbit and Pork' = talk. Therefore in the tradition of Cockney rhyming slang to 'rabbit' or 'rabbiting on' is to talk a lot.
The act of defeating someone in combat by means of unlikely, unusual, or clever means. Alternatively, to defeat someone using grossly devastating means.
>>>Attention all personnel, someone is Robusting Johann in the main corridor
>Did you hear about Johann getting a toolbox to the head?
>> Yeah dude, he got fuckin' Robusted hard.
Extensively 1-upping anything and anyone with details that border on impossible
Guy 1: My Camaro is getting a little over 500 horsepower now
Guy 2: Yeah, well my Mini Cooper can fly to space!
Guy 1: Dude, stop fucking rabucking me...
To vent your frustration; either loudly or through the Internet. Most people prefer the Internet, like going to VentNation.com or related sites, or going bat s--t crazy and ranting in someone's face. Sports fans and TV personalities enjoy ranting the most, and so do girls amongst their friends.
Person 1: Why are you ranting?
Person 2: Because I'm unemployed. I don't have a girl. I hate my life! FML!
Person 1: I HATE THE PATRIOTS. TOM BRADY IS A NO GOOD PRETTY BOY AND BELICHICK IS A BELICHEAT.
Person 2: Stop ranting and calm down!