An erection that has popped up for no reason. It has randomly come up. Random+Boner=Roner.
Friend A: Dude, what did you think of that math test?
Friend B: It would have been fine, if I didn't keep getting roners.
by popman December 8, 2010
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A word used to describe an individual who the vast majority would consider to be pathetic, laughable, and simply out to lunch. Their self-image often contrasts sharply with reality, and they generally lack the mental capacity for introspection. Being a Roner can be a permanent state, or something you turn into when your hammered or on pills.
Josh: Yo dude, Sean was on one last night. Stacey said he was so drunk he shit himself. Did you see him? I just about knocked him out when he started wheeling the girl I was trying to pork.

Andrew: Bruh, he was roning for sure. And lol thats sad man, if I shit myself in public I'd probably change my name, move to Indonesia, and get as far away from this life as I possibly could

Josh: Word. I guess he's always kinda been a roner eh.
by palmolive4 October 22, 2017
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a random boner, when one is unaware of their erection
I got up to go to the chalk board and I realized that I had a roner!
by Z-money Ssadab November 7, 2007
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When one shits in his or her pants, producing a large lump seen from behind as a rear boner.
Hey Ben, that's a mean roner you're sportin' there! Damn it smells....did you shit in your pants? Next time, call me and I can come cover your class for 15.
by TravellerBeyond January 7, 2010
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A Roner (row-ner) is a random boner.
I was sitting on the couch walking Sportscenter when all of a sudden I popped a Roner.
by RufusDude July 1, 2010
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An erection that does not have a precursor.
During a presenation on the real estate market Scott was surprised to see he had a roner since there was no obvious stimulant that would arouse him.
by DonE BDS March 1, 2010
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A random and spontaneous boner caused by nothing in particular.
John popped a roner on his way to school today.
by AJG323 January 17, 2012
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