Someone who is either an
idiot, or spends too much time taking
drugs. Someone who shows signs of minimal
intelligence and/or common sense.
This phrase can be used in an offensive or a friendly context.
"Look at that prick, he's fuckin tuned to the moon, so he is"
"Ah've goat my giro, ah'm
gonna be well tuned
tae the moon the
night so ah am"