A description of what a culture regards as standard or conventional sexual practice. Often, it is interpreted as sex which does not involve elements such as, BDSM, kink, or fetish activities. Usually defined as boring, plain sex. But, a vanilla lover would regard it as making-love, passionate sex.
1. Among heterosexual couples in the Western world, vanilla sex often refers to the missionary position.
2. Among homosexual couples, it sometimes implies that the activity is non-insertive (i.e. intercrural sex, frottage etc.)