On sound and visual media, the audience would automatically here the meaning as "no comment". I can't imagine a context in which "know comment" would make sense.
Now, now, ALF; no oaf half knows the way now how to write right or will take a bow to kow-tow and wow the right people for four or more hours of a chore on the shore for sure or four-by-four on the floor, or poor to the core or the corps that will weigh way too much to much of our two much more than fourscore and seven years of ears hears fears, sheds tears, smears dears, here's jeers for your tour or bores boars (aka clogs hogs) with coarse chores, eat s'mores or beat feet in a feat of furry fury then eat curdled curry. ~
~ 
[W]e[y]lon Musk 