get in someone's hair
US /ɡɛt ɪn ˈsʌm.wʌnz hɛr/
UK /ɡɛt ɪn ˈsʌm.wʌnz hɛr/

1.
邪魔をする, 迷惑をかける
to annoy someone by being present all the time and bothering them
:
•
My little brother always seems to get in my hair when I'm trying to study.
弟は私が勉強しようとするといつも邪魔をする。
•
I need some space; you're really starting to get in my hair.
少しスペースが欲しいんだ。本当に邪魔になってきたよ。