It's only since the rise of social media that we have had an opportunity to study these elongated exclamations, said scientists at the University of Vermont Burlington, who started collecting tweets back in 2008 when they first noticed that stretched words like "hahaha" and "duuuuude" were being used quite commonly.
Since then with the aid of computers, they have analyzed some 100 billion tweets generated between September 2008 and December 2016 to catalog drawn-out words and discover whether there are any patterns in the way we use them.
"We were doing something a bit silly and playful, and that's part of science. You never know what you might find," said Peter Dodds, a professor at the University of Vermont's department of mathematics and statistics.
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