not wise
lunatical
mad
insaniac
cuckoo for Cocoa Puffs
half-crazed
crazed
deranged
stark raving mad
psycho
Ophelian
insane
insane in the membrane
loony tunes
nutballs
not right in the head
mad as a fish
maddening
half-cracked
meshuggener
mad as a March hare
maniacal
cracked as an egg
few cards shy of a full deck
cuckoo
gobaloon
crazy as a cootie bug
crazy as a cootie
jimjam
crazy
gobsmacked
out of one's mind
becrazed
bodge
phantasmalian
barking mad
hysteretical
deceased
phantasmatical
nutzoid
gone fishing
insano
stark staring mad
loopy
one brick short of a full load
potty
loony
crackers
hatstand
bughouse