I really don't fully understand the concept of "manliness". A "man's man" can be anything from a suave lady-killer, to a burly lumberjack.
And in this day-in-age, manliness has taken on an even newer, more absurd form. Anybody remember Robot Unicorn Attack? Remember what people said? "What's wrong, you're not MAN enough to be comfortable playing a game with rainbow unicorns and faeries?"
Or Scrubs: "What's wrong? You can't handle pure unadulterated MAN LOVE? Its not gay, we're just man enough to share our feelings!"
So, in actuality, manliness has taken on a newer, more complex meaning that goes beyond the macho-man stereotype of yesteryear. Nowadays people who still cling to upholding the macho definition are seen as either being ironic or just hiding their insecurities. Unless, of course, you go completely over the top a-la Tengen Toppa Gurren Lagann.
So, yeah, while I don't play, or even like FOOTBALL, or tear phonebooks in half with my bare hands, I suppose I consider myself a semi-manly man.
I occasionally shave with a pocket knive in lieu of a razor, I can kill a man with my bare hands if need be (black belt), I can survive on my own, I like death metal, and I'm comfortable enough with my sexuality to say I like show-tunes, the occasional cute/girly thing, and do other "gay" things, sometimes with my gay friends, without fear of ridicule.
That sounds pretty fucking manly to me.