Meaning of the word "be like a bear with a sore head" in English

What does "be like a bear with a sore head" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

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/
"be like a bear with a sore head" picture

Idiom

1.

to be in a very bad temper

Example:
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.
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