Wring your neck

"I would have never expected...going to ring his nect..can't even believe...he just got up and walked out."

Please help me with that "ring his neck", what does it mean?

Thank you.

It's "wring his neck." Wring is pronounced the same as ring.

From Merriam-Webster online (see 3a):

Main Entry: wring
Pronunciation: 'ri[ng]
Function: verb
Inflected Form(s): wrung /'r&[ng]/; wring·ing /'ri[ng]-i[ng]/
Etymology: Middle English, from Old English wringan; akin to Old High German ringan to struggle, Lithuanian rengtis to bend down, Old English wyrgan to strangle -- more at WORRY
Date: before 12th century
transitive senses
1 : to squeeze or twist especially so as to make dry or to extract moisture or liquid
2 : to extract or obtain by or as if by twisting and compressing
3 a : to twist so as to strain or sprain into a distorted shape b : to twist together (clasped hands) as a sign of anguish
4 : to affect painfully as if by wringing : TORMENT
intransitive senses : SQUIRM, WRITHE
- wring noun

People wring chicken's necks to kill them. Gruesome. That's why I'm a vegetarian.