Conventional sex, colloquially vanilla sex, is sexual behavior that is within the range of normality for a culture or subculture, and typically involves sex which does not include elements of BDSM, kink, or fetishism.

What does the term vanilla mean sexually?

Vanilla sex refers to conventional sex that conforms to the very basic expectations with a culture. Classically, in heterosexual sex, it refers to sex in the missionary position, and broadly speaking, it excludes fetishes such as S&M.

What does vanilla mean in slang?

(Urban Dictionary's top definition for “vanilla” is “unexciting, normal, conventional, boring.”) Essentially, using basic in such a way means you're a basic consumer, mimicking the culture you endlessly scroll through as to indicate your (probably late) awareness of what's trending.