be like a bear with a sore head
US /biː laɪk ə ber wɪð ə sɔr hɛd/
UK /biː laɪk ə ber wɪð ə sɔr hɛd/

1.
to be in a very bad temper
:
•
Don't bother him today; he's like a bear with a sore head.
•
After losing the game, the coach was like a bear with a sore head.