That's worse than having "The Hustle" or the theme for "I Dream of Jeaanni" stuck in your head
Of course, Hugo Montenegro did create some more memorable work..
Point to the glass and say "Una birra?"
Just get her attention and point to the empty glass. Say "One more, please?" in the language of your choice.
People aren't retarded.
Hope this helps. ~from a guy living in a non-English speaking country.