首を突っ込む

Meaning

1. expv5m
   to poke one's nose into another's affairs; to have a hand in; to take a (deep) interest in; to meddle in
2. expv5m
   to poke one's head (into a room)

Example sentences

• 他人のことに首を突っ込むな。

  Don't pry into the affairs of others.

• 私はあなたのことに首をつっこむつもりはない。

  I don't mean to poke my nose into your affairs.

• つまらないことに、首を突っ込むな。

  Don't risk your neck over something foolish.