In slang, "roster" can refer to a list of potential romantic partners or dates that someone is considering or pursuing.

The term "roster" is sometimes used to negatively describe a person's long list of past romantic/sexual partners, implying they have been with many people.

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In some urban contexts, "roster" is used as a verb, meaning to "roster someone" - which can mean to add them to a list of potential romantic/sexual partners.

The slang use of "roster" to refer to a list of sexual/romantic partners originated in African American communities in the 1990s and early 2000s.

"Roster" in this context is related to the idea of "keeping a roster" or "having a roster" of people one is involved with romantically or sexually.

The slang term "rosterbation" has emerged, meaning the act of obsessively managing or thinking about one's roster of romantic/sexual partners.

Using "roster" in this way can imply a sense of objectification, as the people on the list are treated more like interchangeable items than individual romantic partners.

The slang use of "roster" has spread beyond its origins and is now used in various demographic groups to refer to romantic/sexual partners.

Some view the slang use of "roster" as misogynistic, as it is more commonly applied to women's sexual/romantic histories than men's.

While the slang meaning of "roster" is well-established in certain communities, many people remain unaware of this alternative definition outside of those contexts.

Linguists have analyzed the slang use of "roster" as an example of how language evolves to serve the needs of specific social groups and subcultures.

The contrast between the standard definition of "roster" as an organizational list and the slang meaning related to personal relationships highlights the versatility of language.