What is i fw you heavy?

"I fw you heavy" is an internet slang phrase primarily used in African American Vernacular English (AAVE). It expresses a strong feeling of liking, appreciation, or admiration for someone.

• It's a more emphatic version of saying "I like you" or "I mess with you." The "fw" is a shortened version of "fuck with", but in this context, it's not meant to be offensive or sexual.
• "Heavy" emphasizes the intensity of the feeling. It implies a deep appreciation for someone's personality, character, or actions.

Therefore, it essentially conveys a profound level of positive regard. You can learn more about the subject of "I fw you heavy" and what it means to "like someone".