I have always thought R&R meant rest and relaxation, but I recently discovered it's a military term that actually means Rest and Recuperation. I love the power of words. Relaxation is banal while recuperation is more vivid and implies the recuperator is on the mend from some drawn out battle. (Thank you, servicemembers, for your hard work and sacrifice!)
According to Wiki, R&R can also mean:
rescue and resuscitation
read and review (as in book bloggers...who knew?)
recent and relevant
resettlement and rehabilitation (when would you ever use that?)
Other than the last one, I think the phrase "we can all use a little R&R" is absolutely true in any of these cases.
Speaking of rescue and resuscitation, your comments on my plea for a butt-kicking are sinking in and I have mapped some things out in my mind. And now to get those thoughts onto Google Docs...