A pervert, particularly of a sexual variety.

Synonymous with pervert, but has “sex” prepended to it for emphasis.
You are a disgusting fucking sex pervert, Larry.
by Schmelp June 24, 2021
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Internet Sex Perverts, also called ISP, is a term to refer to online perverts who draw weird shit. Sometimes they draw children, sometimes adults, mostly children, never adults. The term is very broad and can include many people, some people also have their own definition for ISP but it's mostly agreed that people who draw/edit odd pictures, often involving children.
His mother came in only to see what her son had been drawing; she yelled and called him a Internet Sex Perverts
by Boblik November 17, 2018
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