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The prevalence of touchscreens has probably resulted in a decrease in average fingernail length
(self.showerthoughts)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
It could, however, make a social trend for shorter fingernails (primarily on women, I imagine). Just meaning people are more likely to trim their nails shorter.
I know, but it might be a short trend (pardon the pun). It's also not a trend currently supported by my personal anecdotal evidence.