While the specific string "sexxxxyyyyladies" is a non-standard digital construction, its literal meaning in English translates to

In modern slang, "ladies" is frequently used as a collective noun for a group of female friends or peers. Why You Won’t Find This Specific String in Oxford

For accurate definitions of modern slang that hasn't reached formal dictionaries yet, is often the most effective resource, as it tracks evolving internet subcultures and stylized spellings.