Girls, this will happen to you.
Your teacher, coach, boss will say, "I need you to ..." then finish with something like do a presentation on the Pythagorean Theorem. Or lead today's calisthenics. Or head up a new working group. The first reaction for many: Oh crap, why me? After that, you have a choice to make.
You can mope and sulk and wonder how it came about that you got stuck with this.
Or, you dive in, ask questions, apply some thought and hard work. Do your best, add value to what you've been given, and realize that it's not about your own comfort, it's about making things around you better. Now you have an opportunity to prove yourself. Show what you can do.