THIS IS NOT A DRILL.
EXERCISE, EXERCISE, EXERCISE.
This post is the obligatory link to relevant XKCD:
Ceci n’est pas un drill.
This pangram contains four as, one b, two cs, one d, thirty es, six fs, five gs, seven hs, eleven is, one j, one k, two ls, two ms, eighteen ns, fifteen os, two ps, one q, five rs, twenty-seven ss, eighteen ts, two us, seven vs, eight ws, two xs, three ys, & one z.
Around about 1400, Geoffrey Chaucer’s first publication of Canterbury Tales had a page which said “Please ignore this notice.”
First it was just a blunt “This”, but he got self-conscious, but was out of white-out.
This is a sentence that says that all comments in this thread should start with the words, “This is a sentence that says…”.
Crũshed tomatoes only! unless you like to eat garbage
This thing is self-referencing on multiple levels. The plastic wrapper is really sharp. You could cut a sheet of paper in half with it.
Black Library (a Sci-Fi publishing house) had something similar in 2012 as an Aprils Fools:
Audiobook:
Exactly 10 min just Silence.
Sooo. . . “Oreo-flavored Oreos?”
It’s like Oreos squared! You can really taste the Oreo.
Well, not until you measure them anyway.
Dammit, I paid attention to it.
Ah yeah, 3’25", the happy hardcore remix of 4’33" - a classic that one.
Seems to me you could make a long list of album covers that are self-referential, although the only two that immediately come to mind are these: