It's definitely appropriate if you're talking about the practice itself; slightly less so if you're using it metaphorically. But you know what? The boundaries o

It's definitely appropriate if you're talking about the practice itself; slightly less so if you're using it metaphorically. But you know what? The boundaries of what's appropriate and not are culturally constructed, you should be able to use the word "belgium" in a serious screenplay if the intent is artistic enough.