Weekends.

If you're doing it right, most summer days can at least feel a little weekendish.  But a Sunday morning in late July, with a hammock and a newspaper to share, is the real thing: authentic summer weekend.

And if you're anything like me, you nearly ruin the relaxed mood by making sure that you capture idle moments like these, so that you can look at a picture of a lazy summer morning all wistfully in late February.  And then you Instagram the picture for immediate nostalgia.