ズリセンalso: ずりせんMeanings1nounmale masturbationcolloquialslangSlang term for male masturbation; a reversal of センズリ. Used in very casual, often vulgar contexts.See also: センズリあいつは一いち日にち中じゅうズリセンしてるんじゃないか。I bet that guy spends all day jerking off.