the opposite of a boner; when your penis actually shrivels from something unattractive or undesireable. It can be used in almost any place boner can be used.
guy #1: did you see that sweaty fat chick on the treadmill?
guy #2: yeah she totally gave me a noner!
or "Today i ran over my cat on the way to my job which i got fired from for being late. After that i went to get coffee and spilled it on my lap. I had a noner all day."
When a mans own penis goes so far back into his body that it erects to go further. This can happen when a man is either scared, disgusted, turned off, or extremely cold.
(Nuisance Boner) also known as a R.O.B - Random Occurring Boner - generally happens when you are bored "stiff", in school or family events and all things in between. This is the type of boner that usually goes unnoticed, non the less you are completely aware of what is happening. The more you convince yourself you don't want wood the harder it gets.
(you) - So i was at my family christmas the other day and my aunt kept blabbing about her divorce problems, next thing you know. Mad Noner is coming on.
(Buddy) - Haha happens every time!
(you) - I know man and the more you try to stop it the more raging it gets.