Mostly Harmless

'Mostly Harmless' means something more than not harmless.

My dog is Mostly Harmless, it probably won't bite you.

by atatakaiz May 1, 2019

mostly harmless

The current (in some dimensions) passage in the Hitchhiker's Guide to the Galaxy, which relates to the planet Earth. (The one you are on now, unless otherwise).

"They updated the entry..."
"What to?"
"Mostly Harmless."

by KinGAleX March 27, 2005