Oral sex is sexual activity involving contact between a person’s mouth and their partner’s genitals.
N-UNCOUNT
Oral sex is sexual activity involving contact between a person’s mouth and their partner’s genitals.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012