1 definition by Mile High Doctor

Top Definition
Anal Sex. The 100% effective, 100% natural birth control is doing it in the butt. Do a girl in the ass and she won't get pregnant. Also known as "NBC"
Brian isn't ready to have a baby yet but his wife went off birth control so he decided to start using Nature's Birth Control and did her in the butt.
by Mile High Doctor November 12, 2012
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