Viva la difference! (maybe). My way of offering the idioms are different. Are the differences okay with players and viewers? If not, let me know what changes to make and I'll alter them. In the meantime:
This idiom is four words meaning “without a doubt no longer living.” In ASL, the third word is not signed; however, the last word is split into two signs.
1. Fingers palms down, joined, and pointing away from you, hold hands side-by-side, right palm down, left palm up. Now flip hands so that the right palm is up and the left palm is down.
2. Palms down, index fingers extended and apart, bring them together in “same” sign.
3. Third word not signed in ASL.
4. B hands together, palms facing out, fingers up, open hands apart and close them again.
5. Tap right index finger on left thumbnail.