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This is a term used for recovering addicts and alcoholics in the rooms of AAand NA. It is when a person with more than one year of sobriety becomes sexual with a newcomer in recovery. This method is successful because people with less than one year clean have extremely low self-esteem and are in a vulnerable state where they need to be comforted. Typically a man 13th steps a woman, but the reverse is equally as possible.
"You guys want to go to a meeting tonight and start 13th stepping some girls who only have one week clean? Its gonna be easy because they're all slutswith daddy issues!"
by Broseph2891 March 27, 2014