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1.
An occourance when a man is so revolted that even his penis cowers in fear, hiding from its object of horror.
That girl is so ugly, I get a renob just thinking about her.
von WallaWallaOnion 22. April 2003
 
2.
When the penis goes from erect to flacid in a very sudden fasion. Usually has a slight stinging feeling in the head of the penis during the shrinkage(similar to the feeling of recieving blue balls). Can occur at the sight, smell, touch or sound of something unatrractive.
Dude, she had so much hair in her butt hole that i got the worst Renob of my life.
von MidShaftGash 8. Dezember 2005
 
3.
a)It's boner spelled backwards. Refers to a dumbass. Usually used after someone does or says something stupid.

b)an erect penis
Dan you renob!! There is no such thing as a off-suite flush.

Matt had a renob after looking at caitlen.
von t-gay 24. August 2006
 
4.
Something you get when you see a rather unattractive female. An inverted boner, if you would. Or perhaps a negative hard on.
"Wow, did you see that ugly ass bitch with no tits? She totally gave me a renob.
von TheClyde 12. August 2005
 
5.
It's boner spelt backwards. A limp penis. A very ugly person, causing a man's penis go limp. A stupid person.
Robbie has a renob.
You're such a renob.
Oh my gosh don't look at the girl she will give you a renob!!!
von Marissa Humble 18. April 2006
 
6.
(boner spelled backwards) Anything related to a boner or erection.
Look at that douche Evan, he is such a renob.
von bonerjames2000 21. Oktober 2010
 
7.
Boner spelled backwards. Similar to being turtled, a renob is when one's boner becomes un-erect, or limp, usually caused by seeing or hearing something vulgar or disgusting.
Guy 1: did you see the new Miley Cyrus photo-shoot?

Guy 2: yeah, I was getting ready for a fun night and totally got a renob.
von Thefrancedance 16. Februar 2014