首くび筋すじを違ちがえる

expression, ichidan verb

wrench one's neck; strain one's neck

Used when one twists or strains the neck, often from sleeping in an awkward position or a sudden movement. The verb 違える here means to dislocate or sprain.

• 朝あさ起おきたら首くび筋すじを違ちがえていて、右みぎを向むけない。

  I wrenched my neck when I woke up this morning and can't turn to the right.

• くしゃみをした拍ひょう子しに首くび筋すじを違ちがえた。

  I wrenched my neck when I sneezed.