Good, good, well done.
The movement is very smooth and fluent, the straw actually looks real. You also know pretty well how to operate with cameras and when it is the best time to make a cut, so there wasn't a single moment when the animation would feel too slow, laggy or boring.
This is a joke, so backgrounds/physics don't matter (in fact the animation's funnier like this), but if you create something with a more serious topic in the future, try to make the water behave more realistic and the ground – especially the lake's shore – a bit smoother, because now you can clearly see its edges.
The video might also have been funnier without the last ten seconds, but that's just my opinion. It's good to see a nice 3D animation here.