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Similar to conventional docking, however an uncircumcised man's foreskin engulfs an outtie belly button. This activity is available to both homosexual and heterosexual couples.
Have you heard of the button-docking party happening tomorrow night? Outties and uncircumcised lads only!

I discovered that Linda had an outtie, so I totally button-docked my tip to that shit!
by Dr. Belly Fucker January 05, 2010
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