scatalogical mishearing

I was going to Sainsbury's.
She said: "I need chocolate"
I said: "Plain or milk?"
She heard "Anal milk?"
She said "ANAL MILK?"
We laughed.

Do you remember the last time you laughed and something came out of your nose? That didn't happen today, but when it does, you know that you're alive, that some things are funny, and that the empty spaces in your head are all connected, and that they allow the free flow of materials between them. This is both gross and strangely life-affirming (in my twisted view).