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A double entendre of "bones" that started on the Random Insanity GameFAQs forum. It it used when one wishes to make a joke about a person "boning" someone only to deny it and tell them that they have a dirty mind.
Person A: Did you know that she bopnes his brother?

Person B: You mean bones?

Person A: No

Person B: What is a bopnes then?

Person A: It's whatever you want it to be.
by An RIer August 29, 2007
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