It's a duck

Voice1: Or is it?
Voice2: Yes, it is.
Voice1: You sure it's not a sea gull?
Voice2: No it is an adult Common Drake of the species Eidier Duck (Somateria mollissima) I looked it up on Wikipedia.
Voice1: Wikipedia could be wrong, sure it's not a Penguin?
Voice2: It is definetely NOT a penguin! It's got a duck's bill.
Voice1: Maybe it's a platypus!
Voice2: It is NOT a platypus! It's got feathers, it's a duck!
Voice1: Or a rabbit, I've heard they are easily confused.
Voice2: That's only in optical illusions, it IS a duck!
Voice1: Hhhhmmm... maybe it's a shape shifting inter-dimensional brain sucking alien!
Voice2: A what?
Voice1: A shap-shifting inter-dimensional brain sucking alien.
Voice2: There's no such thing!
Voice1: How do you know, they can look like anything they want!
Voice2: I'm pretty sure it's not an alien!
Voice1: But you can't know for sure!
Voice2: It's NOT an shape-shifting alien!
Voice1: But, how do you KNOW it's not?
Voice2: It's not doing anything alienish, it's just bobbing around on the water!
Voice1: But maybe that's what it wants you to think!
Voice2: Look, it IS NOT an alien! It IS a duck!
Voice1: Ok, if you are sure.
Voice2: I am!
Voice1: Ok then, it's a duck.
Voice2: Thank you!
Duck: Take me to your leader.
Voice1: Told you!
Voice2: WTF?

Sometimes it's better not to listen to those little voices inside your head!