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get someone's goat
Fig. to irritate someone; to annoy and arouse someone to anger. I'm sorry. I didn't mean to get your goat. Jean got Sally's goat and Sally made quite a fuss about it.
get your goat
to make you very annoyed or angry The message on her answering machine is really annoying, and I think she leaves it on there just to get my goat.
get your goat(British, American & Australian informal) also get on your goat (Australian informal)
to annoy you It really gets my goat when people push past without saying 'Excuse me'. The kid never stops whingeing - he really gets on my goat.