Term used by feminized males and others within analist culture to denigrate men who acknowledge their same-sex needs and desires and whose behavior is masculine.
In reality, those masculine men are not acting; they're simply being themselves.
The acting is coming from the feminized males, who play the roles sexually and otherwise of "top" and "bottom."
Related article: Straight-acting
See also: Dom/sub, Analism, Heterosexualization, Sexual orientation, Natural masculinity, Frot.