Five Knuckle Shuffle
Does anyone know what the [British] term "Five knucle shuffle" means? I saw it on an Amazon.com review by a London viewer.
Slang for male masturbation as per a few websites.
www.well.com/ user/earl/synonyms.html
Based on context, of "They got into..." there is no way it could be refering to masturbation. A fist fight seems to fight nicely.