I have oil slicks on the brain.

It was the kangaroo rat in me.

I was on a Rocky Mountain High.

My brain cells are an endangered species.

I'm worried about the beaver.

I've got dry rot.

Got a touch of the ol'Lyme disease.

I ate too many pinecones.

I'm ecologically unbalanced.

I was daydreaming about Forrest Tucker.

I see spotted owls before my eyes.

I'm an environmental case.

All the fresh air was getting to me.

It's hard to function properly when you're infested with chiggers.

I ozoned out.