1 definition by The Idea Machine

(Noun): Something or someone that is unpleasant to all the senses.

(Noun): Slang for exclamation mark.
"Dude, stop being such a period boner."
"You seriously look like such a period boner right now."

"You can simply add a period boner to the end of any sentence to imply emphasis or intensified volume."
by The Idea Machine July 17, 2014
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