In text, "HB" most commonly means "Hurry Back," which is used to ask someone to return quickly after temporarily leaving a conversation or activity. It is a friendly and informal way to tell someone to come back soon, often used in chats, gaming, and social media contexts. Besides "Hurry Back," "HB" can also mean "Happy Birthday" in contexts such as social media and birthday greetings. Other less common meanings include "Hot Babe," "Homeboy," and "Hemoglobin," but the interpretation depends heavily on the context of the conversation. So, the meaning of HB in text varies but primarily refers to "Hurry Back" or "Happy Birthday" based on usage context.