lose one's shit
split a gut
blow a fuse
go ham
lose one's cool
fuse
throw one's toys out of the pram
blow one's top
lose it
hit the roof
drop one's bundle
mitigate
snittiness
short-tempered
ill humor
tantrum
burst a blood vessel
scene
fit
conniption
offcome
grumps
forget oneself
temper temper
ill-humored
temperative
monkey
misset
impetuosity
sick and tired
quick
irascibility
get on someone's bad side
retemper
freak out
froth at the mouth
for fudge's sake
radge
draw fire
temperance
owliness
crank
tempered
get someone's back up
red rag
rub up the wrong way
bad-tempered
red rag to a bull
raise someone's hackles
flip out