You think about it for a second and you've always wanted to give it a go with a gamer girl. You know that since Mary's so basic that even as a gamer her palette for games will be vanilla and casual. As you write down, "Mary is a gamer and loves to spend her free time thinking or playing with video games." You notice that there isn't much of change in her. Mary's top changes into a gaming t-shirt that you can find in almost anywhere and her school bag has a very casual looking big supermarket like keychain attached to it. If she was a true gamer it would show more than this. Now she only gives out a forced "I also play games" type of vibe...
"Maybe it's better like this." You think.
You've narrowed down her interests and you have now an ice breaker when you approached her during recess. Maybe you could get know her better normally as you share common interest or maybe you should narrow her gaming preferences and interests even more specific. You pick your pen once more and think about what you should do next as the class starts.