A red mouth with teeth biting down on one side of the lower lip. It is a new emoji belongs to Emoji 14.0 which released in September 2021.
🫦 is a classic expression used to attract others or to express flirtation
😘. Some people also bite their lips
👄 when they are nervous or anxious. This emoji 🫦 can indicate seduction, flirtation, charm, anxiety or tension. Related emojis:
💋💄💅💃