Here are a couple quotes on being stretched thin.
From Bilbo Baggins in Lord of the Rings:
I feel thin, sort of stretched, like butter, scraped over too much bread.
From David Wells in God in the Wasteland:
To stretch this far … modernity must necessarily be culturally thin. … It is a generic culture, this culture of the television age, of asphalt, advertising, uniformity, and waste. And those who feed on it, those who live by it, become generic people who also are thin, who stretch wide and belong to nowhere in particular.