over the river and through the woods
lose it
craze
madden
lose one's marbles
stark staring mad
Ophelian
mad
mind-blowing
crazy
a kangaroo loose in the top paddock
indetermination
lunatical
psycho
muse
over the edge
nutballs
disorientation
underimagined
mad person
gelt
lunatically
few cards shy of a full deck
mooner
half-cracked
insanity
bodge
specter
mad as a March hare
misimagination
one brick short of a full load
hard of thinking
puzzleheaded
unimaginativeness
maniacally
chronoclasm
overimaginative
lima bean
insano
mentalist
lunatic
jimjam
rack one's brain
mindless
crack up
wooze
maniac
go potty
ignis fatuus
visionary