Dictionary / Vocabulary / しゃしゃり出る
しゃしゃりでる
to come uninvited; to crash (a party); to butt in
お前には関係ない事なんだから、しゃしゃり出て事態をややこしくするなよ。
It's none of your business, so don't mess up things by getting involved.
ちょっと、こういう時にだけしゃしゃり出るのはやめてよ。
Hey, can you stop weaseling your way in, especially at times like this?