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."
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."
by Pman the great November 22, 2010

Used to describe an erection that you get from something that you never expected would give you an erection. Puts an official name to the infamous "surprise" boner.
Alternate definition: An erection that one WILL receive while watching Apollo Anton Ohno speed skate; it's inevitable.
Alternate definition: An erection that one WILL receive while watching Apollo Anton Ohno speed skate; it's inevitable.
"It was the weirdest thing. I went to flip the light switch and the static shock gave me a raging Oh-Noner. I had no idea I was even into that stuff!"
by Gorky's Zygotic Glove Puppet January 23, 2014

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