nonoko

>Though maybe you were looking for Nophono?

nonoko on the Sharty

nonoko on 4chan

noko on 4chan before it was the default

Before August 2012, if you replied to a thread on 4chan it would redirect to the index instead of keeping you on the thread. You could prevent this by typing noko in the email field.

In August 2012 the default behavior of posting was changed. Upon posting users are redirected to their post instead of the board index. To prevent this, you can type in nonoko in the email field.

Pretty useful if you're raiding and cattywiping an imageboard because it saves you the second it takes to return to the previous page. Nonoko that nophono.

Nonoko is also the name of the soybooru namefag that created Lennonjak.

Etymology

The word "noko" is short for "nokoru", meaning "to stay behind". Obviously, the word "nonoko" means "no noko".

Source

The 'cuck's Q&A explains it.