I mean asexuality in general is a pretty nebulous thing - I mean I'm sure some people are never horny with no sex drive or desire to be intimate with someone else but then there's the broader spectrum. Personally for me it's very obvious looking at my history that my sexuality is different than my peers, and I guess the best way I can describe it is that it's mostly 'off', it's just not really on my mind much, but I have flashes of it being there and a hesitant desire to connect on a romantic level. I guess it could be gray, demi, or asexual, don't know, but it's pretty distinctly non-sexual regardless. So I think gray asexual is less than "sometimes horny", it's more like nonsexual with flashes of sexual desire here and there, and perhaps at a lesser intensity than the average joe.