Why is it gay that a man tickle another man? This is a loaded question. The question itself implies that it's seen as a homosexual act to begin with. Maybe a restructuring of the question is in order to get better responses. I understand what the heart of the question is but the wording is off. The answer would be no because one cannot act gay. A man can be more feminine than how society expects a male to act (still doesn't make him gay) but gay is not a description on how to define ones own masculinity. Masculinity is a social construct which we, as a species, have been indoctrinated into for generations.