I was wondering to myself about the word "shirty". It seemed so curious a word. After all, what did its meaning have to do with shirts. "Were the two words even related?", I wondered.
So I looked up "shirty" in the dictionary...
shirty (ˈʃɜːtɪ) — adj , shirtier , shirtiest slang chiefly ( Brit ) bad-tempered or annoyed [C19: perhaps based on such phrases as to get someone's shirt out to annoy someone]
This led me to another question. I have never heard the phrase "get someone's shirt out". So I looked up this, to find out a bit more about the phrase.
And what I found was that the only places it seems to be used were in dictionary definitions of the word "shirty"!
It seems that the phrase means "to annoy someone". But where did this phrase come from and why does it mean that?