five nines
n.— «My phone line has been out—completely out, no dial tone—for 2 days since I discovered and reported the outage. If “five nines” were a guarantee, that is, if it had any reality to it at all, I could expect 100,000 days, or 274 years, of perfect service for each day my phone were out, or 548 years total.» —“Verizon owes me 1365 years of perfect service” by David S. Isenberg Isen.blog Apr. 7, 2006. (source: Double-Tongued Dictionary)
Further reading
In 1971, when a new public library opened in Troy, Michigan, famous authors and artists were invited to write letters to the city’s youngest readers, extolling the many benefits of libraries. One of the loveliest was from E.B. White, author of...
If you reeeeeeeeeally want to emphasize something in writing, you can engage in what linguists call expressive lengthening, or making a word longer by repeating letters. It’s an example of paralinguistic restitution — rendering in text...