2004 July 28, igor eduardo k pfer, “Re: News from July 26, 2004 [OT]”, in rec.sport.basketball.pro[1] (Usenet):
Thëy äre cällëd ümläüts --ÄKÄ röck döts.
2005 — Michael Dwyer, "The full Mötley", The Age, 2 December 2005:
In the world of heavy metal, the umlaut - otherwise known as röck döts - is the ultimate illustration of Spinal Tap's dictum that there's a fine line between clever and stupid.
2006 — Björn Türoque (pen name of Dan Crane), To Air Is Human: One Man's Quest to Become the World's Greatest Air Guitarist, Riverhead Books (2006), →ISBN, unnumbered page:
I imagine I'd be seeing a lot of metal tonight, so why not go for an obscure eighties punk song? Plus, Hüsker Dü = dual röck döts!
2010 October 15, peer mankpoot, “Re: Hon my way to Georgia?”, in alt.usage.english, sci.lang[2] (Usenet):
So, after the metal umlaut (röck döts) we now also have the bluegrass aitch.
2011 April 2, David Sandborg, “BGE notes”, in rec.roller-coaster[3] (Usenet):
Incidentally, the official spelling of the name appears to be Mäch Tower--complete with "röck döts" umlaut.
2012 February 9, James Hogg, “Re: Dotted capital I”, in alt.usage.english[4] (Usenet):
You mean they're not just for decoration, like röck döts?
2015, Bernd Kappenberg, Setting Signs for Europe: Why Diacritics Matter for European Integration[5], Columbia University Press, →ISBN, page 99:
Diacritics are not folkloristic or moribund relics of European language culture that must give way to the dominance of English spelling sooner or later: the appearance of heavy metal umlauts aka "röck döts" has long been known (1969). It is a special form of foreign branding.
