Smelly Stunks

This morning on the way to preschool Ben told me this story:

BEN: Yesterday afternoon Miss Kelly was reading us a story, and I said something that was correct.
ME: Good for you! What did you say that was correct?
BEN: Miss Kelly was reading a story about stunks --
ME: Skunks?
BEN: --Stunks*, and she asked why are stunks very smelly and nobody knew the answer but me.
ME: What answer did you give?
BEN: I said stunks are smelly to defend themselves.

Stunks are smelly to defend themselves! I am so proud of my boy...

*I cannot for the life of me get Ben to correctly pronounce the word "skunk." I suppose a smelly stunk does make more sense to a four year old...