Answer: hasacow

AnswerCrossword Clue
HASACOWFreaks out
HASACOWGets agitated, Bart Simpson-style
HASACOWOverreacts, slangily
HASACOWFreaks
HASACOWGoes bananas
HASACOWGoes ballistic
HASACOWFlips out
HASACOWGets upset la Bart Simpson: 3 wds.
HASACOWGoes nuts
HASACOWLoses it
HASACOWFlips
HASACOWWigs out
HASACOWBlows one's top
HASACOWGoes ape a la Bart Simpson
HASACOWFlips one's lid