In ~2014 there was a brief craze for the spoof "Dogecoin" cryptocurrency, IIRC largely on reddit.

It still exists, although it's far below its peak interest [1] - and of course dogetipbot went bankrupt after an insider spent the cold storage, as is traditional.

[1] https://trends.google.com/trends/explore?date=all&q=dogecoin

I also remember them making this announcement (and it wasn't Dogecoin, as the other commenter says). I can't seem to find an announcement about this though.