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When a Man puts his dick in a Woman's vagina.
I had sex with Sarah the last night.
An abbreviation of sodium ethyl xanthate, a flotation agent used in the mining industry.
Yeah that's the exact definition of sex lol. Didn't expect that, didn't you
who in their right mind would search up sex in the urban dictionary. go watch some porn its free.
go search up something else other than "sex"
Organisms of many species are specialized into male and female varieties, each known as a sex. Sexual reproduction involves the combining and mixing of genetic traits: specialized cells known as gametes combine to form offspring that inherit traits from each parent. The gametes produced by an organism define its sex: males produce small gametes (e.g. spermatozoa, or sperm, in animals) while females produce large gametes (ova, or egg cells). Individual organisms which produce both male and female gametes are termed hermaphroditic. Gametes can be identical in form and function (known as isogamy), but, in many cases, an asymmetry has evolved such that two different types of gametes (heterogametes) exist (known as anisogamy).
Physical differences are often associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience. For instance, mate choice and sexual selection can accelerate the evolution of physical differences between the sexes.
Studies Entomology and Xylography
Person1: What school will you be going to?
Person2: Im going to a "SEX" school