I remember me and a buddy got out our guitars out during our first week at university halls of residence (dorms). We were both chugging out some Metallica and other heavy stuff in our kitchen - the guys in the room were loving it. One of the girls looked at me in a suitably unimpressed fashion and asked "do you know any Greenday?".
So I started playing some greenday, bon jovi, oasis and what not. I think by the time I finished the entire floor of girls who lived below us was in our kitchen. So yeah, in my experience - play the simplest stuff you know and you'll do alright