I'm a nerd

I've been tutoring a girl in my neighborhood for a while now. I started a few years ago, when she was in high school and have done it off and on since. Now she's a sophomore in college and I've been tutoring her twice a week in math and biology for the last few months.
Anyway, today she arranged for me to do a Biology Review session for her study group. They have a test on Monday so they wanted me to help them get ready for it by clarifying things and making sure they understand everything correctly.
Well, I had such a blast. It was so much fun getting to spend 2 hours talking about the parts of the cell, transcription and translation, cellular respiration, photosynthesis, etc. I love helping them think of ways to remember things by drawing pictures or making up weird analogies. I feel like such a nerd, but I seriously had so much fun. (And I think they did too)
I ended up making so much more money than usual, since they all paid me, but seriously I would've done it for free. Sometimes I forget how much I love just sitting around talking about science.