By teenage you mean 14-15 or like 17-18?
THAT'S IMPORTANT.
Also I have no idea what girls that age love, my female friends all have a hard on for Mario Kart Wii (They're in their 20's though), so maybe that.
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Best LPer ever, Gix ! : http://www.youtube.com/watch?v=Vt5YKmP7ecY