insane
balmy
bananas
barmy
batty
beany
bonkers
buggy
bughouse
bugs
crackers
crazy
cuckoo
daffy
demented
dippy
dotty
flaky
flipped
freaked-out
fruitcakey
fruity
gaga
goofy
haywire
just plain nuts
kooky
loony
loopy
nuts
nutty
off the hinges
off the track
off the wall
potty
round the bend
screwball
screwballs
screwy
slaphappy
wacky
Cats
Mats
Platz
at-bats
batts
batz
brats
cats
chats
combats
fats
flats
gnats
gratz
hats
lats
mats
mattes
pats
prats
rats
slats
spats
stats
vats