I Don't Understand

I practiced all the way from the chemist to the Tearooms.

"I'll just have a coffee please".
"I'll just have a coffee please".

As I sat down once more in my head "I'll just have a coffee please".

It only took a couple of minutes for the waitress to appear and ask "what can I get you?"

This was my moment I remembered all my training and nailed it.
"I'll just have a coffee please










and a fruit scone"

B*gg*r. How does that happen?