Answer: heehawed

AnswerCrossword Clue
HEEHAWEDActed like an ass?
HEEHAWEDSounded like an donkey
HEEHAWEDMade an ass of oneself?
HEEHAWEDEmulated a mule
HEEHAWEDBrayed
heehawedrude laughter
heehawedto bray
heehawedthe braying sound made by a donkey