flip
flip out
siao
kee siao
go to Prestwich
fruity
cracky
up the wall
batty
toppy
three stops short of Dagenham
madden
go bananas
bats
bonkers
go nuts
nut-bar
funny in the head
one fry short of a Happy Meal
spitting mad
berko
bugfuck
off one's trolley
nuts
gila
daft
off one's dot
distraught
mad as a meat axe
jeeringly
bananas
round the twist
wud
have a fit
throw a fit
blow a fuse
combust
fly off the handle
flip one's wig
hit the ceiling
flip one's lid
go ballistic
lose one's temper
have kittens
blow up
rear
hit the roof
blow one's stack
crazy as a bedbug
mad as a cut snake