> It's mostly done sarcastically, though when you do it all the time, is it really sarcastic? Anecdotally, it seems that this is how a lot of new phrasing is s

> It's mostly done sarcastically, though when you do it all the time, is it really sarcastic? Anecdotally, it seems that this is how a lot of new phrasing is spread. It starts off funny, then ironically as an inside joke, then it's just wrote. My little sister started tapping her index and middle fingers together to make a hash symbol while saying "hashtag [whatever]". Started out as a joke, making a bit of fun of some tv show or something and at the same time pointing out that she "got" the reference... and before she knew it it was second nature.