Usually, this sort of item would likely have been spotted by the all-seeing, all-knowing internet-wide gaze of resident nerd/excessive blog poster Paul Constant, but since he’s out fighting Mother Nature this week, I offer this R2D2 Translator Service, from which you can download the free audio files of your chosen post-translation R2 ramblings and use them as ringtones or whatever. Thank you internet! Commence nerding.
Here’s a translation of R2 saying “Fuck you C3PO.”

Geez, don’t they think R2-D2 would have a way that’s shorter than 10 seconds to say that? What’s the point to the bells and whistles if they’re SLOWER than human speech. Sheesh.
I’m pretty sure that’s all R2D2 ever said to C3PO in the movies.