This song is featured in the film “Pitch Perfect”, which I have to admit I have never watched.
I have posted about “The Cup Song” before, because I do the rhythm stuff with paper cups in class music from time to time.
However, the chords for the song are ridiculously easy (by which I mean that even I can play them without breaking into a sweat) for ukuleles;
C, F, G7 and Am (I use G7 instead of G – it sounds ok, and makes it easier to get from F to G7 to C)
you can get the song and the chords here: http://ukutabs.com/a/anna-kendrick/cups/
There are hundreds of versions of the cup song on the internet. Here’s the one when she’s cooking muffins;
If you hunt around, you’ll find tutorials for the cup actions – they are sort of really simple, but slightly tricky…