There seems to be a large and various definition of what a "full stack developer" is and what he is actually doing. People will likely understand different things, depending on which continent you live or try to apply to a job.
Therefore, does "full stack" has anything to do with seniority or experience or field of work? Does someone that hack some stuff both in the FE and in the BE call himself "full stack developer"?
Explain to me what full stack developer means to you like I'm five. Maybe I'm a full stack developer already and I just don't know it yet :)