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1. (n) A boner that spontaneously erupts out of nowhere and from no sexual stimulation whatsoever. Usually occurs due to the G-forces present on roller coasters like Kingda Ka or Top Thrill Dragster.
Bros sitting on Kingda Ka about to go on the ride.

Bro 1: Dude, I'm so excited, this is going to rock!
Bro 2: Yeah man! Lets do this!
Bro 1: HNNNGH...! UGH...!
Bro 1: Bro, whats happening!
Bro 2: ... major rollerboner
by bonerman234 August 03, 2011
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2
When you are on a roller coaster and your adrenaline gets pumping then you get a boner
While I was at Canada's Wonderland i was on a roller coaster and i got a roller boner
by BobitaLovesBob April 30, 2015
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