"Flaquito" is a Spanish term that translates to "little thin one" or just "slender" in English. In the context of porn video tags, it refers to someone who is slim or thin, and could be used to describe a person's body type in a scene. It is often associated with an aesthetic preference for individuals who have a slender build. Please note that this term may be considered offensive by some and should only be used if you are confident in its appropriate usage and context