My Local Burger King Has Really Small Water Cups...

So I was eating at Burger King one day (for reviewing purposes of course!) and asked for a water cup. Maybe they were trying to help me burn off some calories by making frequent trips to the soda fountain, but that's a really small water cup!

I don't think this was the typical Burger King water cup. The employee who handed it to me was still being trained. Then again, on the visit before this, I asked for a water cup and received a coffee cup. But at least that held a decent amount of water.

I wonder what these cups are really for...