Something Very Special.

Older Son: Mistletoe’s for kissing, isn’t it mummy? 
Me: Yes. 
Younger Son (loudly): WHAT ARE MISTLETOES?

Sorry Darling, Mummy Is Clearly Deaf.

In the car...
Older Son (speaking quietly): Wendy is our real mum.
me (distracted): What?!
Older Son (repeating himself): Reindeer ARE real, mum. 
me: Ohhh.

Taking It To The Next Level.

Older Son (singing along to Message in a Bottle): I'm sending out an SOS, I'm sending out an SOS. (pause) My SOS is in the street, my SOS is in the street.

Um...

Older Son (playing a game): We're going to the cinema. To watch Yogi Bear!
Younger Son: What will the girls watch?
Older Son: Oh, girly things. Like Dexter...

Definitions.

Older son: What’s an enemy, Mummy?

Me: Hmm. Well, it’s sort of somebody you don’t like and who doesn’t like you.

Older son: Oh.

Younger Son (in an authoritative tone): NO, an enemy is a sort of purple thing.