The little double-lines on either side of certain words used to indicate the existence of air quotes, when typing out what someone said.
He said he was "sorry", but I know he wasn't. (Note the pixel quotes)

When my boss told me he would need me to work "some" weekends, I didn't realize he meant "all" weekends. (Two pixel quotes in one sentence!)
by Uncle Richard May 12, 2010
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