How'd she figure out I was a ?

Okay so earlier I put a question on yahoo "which stereo type would you say I fit into and why?" and in the info this is how I described myself "I listen to pop, rock, and punk-pop. My favorite bands are within temptation, flyleaf, evanescence, linkin park, t.A.T.u. Lady gaga and paramore. I have average length brown hair. I kinda have bangs but I always push them back with a clip or headband. And I don't use a part line either. I usually dress in dark colors. Sometimes I dress kinda girly but not really perky or anything like that. And I don't wear make up either." And one of the people who answeres said "normal. Probably a but there's nothing wrong with that." How'd she know I was a by reading the question? I know what gaydar is but in the question I didn't say anything about guys or girls. Did I give any hints in the question without realizing it? If so what were they?