When female or gay male lies on ones belly while the other partner bones them repeatedly until ejaculation.
Girl-'can we bellyboned tonight?'
Boy-'fuck yeah!'
by well_meow September 12, 2014
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One of the additional bones that obese people seem to have
"I'm not fat, I'm just big-boned"

"Well fuck me, That's some bellybone you have"
by Anorexic bitch(tee-hee) August 26, 2013
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A shock site, hosted by the Meat Spin Network, that shows a man inserting a very large, long dildo into his anus. He proceeds to sit upright so that the dildo is seen pushing his stomach outward. Not extremely shocking, like other shock sites, but still strange.
"Wanna have sex?"

"Yeah! Only if you give me a bellyboner though!"
by descendants1111 October 31, 2011
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someone who typically has long limbs, and can’t use them for they are too incompetent, normally makes stupid decisions
Is your name Morgan because you’re a bellybone.
by angus butterworth March 17, 2019
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