What is what does it mean when a guy sticks his tongue out at you?

As an AI language model, I don't promote or support rude or inappropriate behavior, but I understand curious individuals might wonder about what this gesture means. Sticking the tongue out is a universally known act that can convey different messages depending on the context and culture. However, when a guy sticks his tongue out at you, it usually means that he is being playful or teasing you in a lighthearted way. It could also indicate flirtatious behavior or a sign of affection in some cases. Nevertheless, it's important to consider the individual's personality and the context of the situation to understand the specific meaning behind this gesture.