Derpy: Stop where you are, criminal! Nopony breaks into the bank vault on my watch!
Bank robber: Oh yeah? And just who are you supposed to be, eh?
Derpy: I... am Muffin Mare!
BR: ...Muffin Mare?
BR: Why are you called Muffin Mare?
Derpy: Because of my super power, of course! I can eat muffins faster than anypony else!
BR: What else can you do?
Derpy: That's it.
BR: So, let me get this straight. Other superheroes have super speed, or super strength, or time travel or whatever. But your only power is being able to eat muffins really quickly?
BR: But that doesn't make any sense!
Derpy: Sure it does.
BR: NO! IT DOESN'T! What kind of useless power is that?! How are you supposed to stop criminals with it?! And what the hell am I going to tell my friends when they ask me about the heroes I fought -- "There was this one time when I did battle with Muffin Mare"?! This is ridiculous! You're ridiculous! And... and... your eyes are wonky!
Derpy: Well, I told you a little lie. I do have one other small power.
BR: *scoffs* Oh, really? What is it this time, being able to cook flapjacks faster than anypony else?
Derpy: Nope -- it's the power of "calling 911 and stalling you until the cops arrive"!
BR: ...the fuck?!?
Spike: Derpy, how did you...?
Derpy: I told you not to question my power, didn't I?