grievance: coffee cups in the media

I do understand how strange a title this is for a grievance and that it's not altogether clear what the hell I mean by this.  Every time you see someone with a cup of coffee, or tea, or what-have-you, depicted in the media... ANY television show, movie, etc., anything which is scripted, for some reason, they don't think to actually put some kind of fluid into the cup.

This may seem like a silly grievance but it really, really bothers me.  And it's just SO ubiquitous that I'm enraged pretty much every time I watch TV or see a movie.  The reason it just boggles my mind so violently is: SO much time is spent on filming shit.  And there are props PEOPLE.  And a lot of time, I'm sure, it's difficult to get exactly the precise prop which is desired.  So to have it all fucked up over the non-putting of fluid into a coffee cup or mug is just so egregiously offensive.

The reason is because a cup filled with coffee moves on a different trajectory than one which is empty.  Try it yourself.  I'm sure you'll see.  So, people go into coffee shops and buy coffee and then whisk about with this "full," brand new cup of coffee.  And even drink from it.  I'm fine with the non-drinkage.  It's not spatially upsetting.

How do movies like Avatar exist with such precision and detail and then eff it up because they didn't put any water into the damned cup?  Pisses me off royally.  This one especially since I find Anne Hathaway so damned irritating:

Who holds coffee like that?  Not this broad:

-moon