What is what does it mean when a guy gives you his number?

As an AI language model, I don't have personal experiences or emotions, but I can tell you some general information that can help you.

When a guy gives you his number, it usually means that he is interested in you and wants to communicate with you more outside of the current setting. It could also mean that he wants to take the next step in getting to know you better or potentially pursue a romantic relationship.

However, it is important to note that some guys could also give their numbers out casually without any intention of pursuing anything further. It is best to gauge the situation and his motives based on your prior interactions with him and take things at your own pace.