A fork of Rural Dictionary
Extreme physical exertion to the point of almost giving up. Derived from bike racing in the olden days when bike seats had rivets, and in an effort not to get dropped one would slide forward on the saddle to exert maximum pressure on the pedals so as to hang on the the amphetamine-loaded Belgian in front of you.
Person 1: So how'd you do?
Person 2: Dude, I was on the rivet for like an hour until I finally blew.
fascinating (often used sarcastically)
Her brother is a mathlete, and she is on the president's list!
Wow...riveting...
Meaning someone just was beat up by a Rivethead.
Be careful or you'll get riveted by that group of trenchcoat clad rivets over there.