you are a dead man —(also: you are dead)
1. is used as a threat to kill:
- Speak one word, and you are a dead man!
2. is used as a caution:
- In this neighborhood, you don’t carry a knife or a piece, you are a dead man.
Note: The expression does not correlate in meaning with the phrase it’s your funeral—(coll.) it’s your affair or concern, so do it on your own responsibility (and suffer the consequences):
- I refuse to involve myself. It is your problem and your funeral.
you are a long time dead—is used to say that life is short and one has to enjoy oneself:
- “I don’t think we want any [drink] today.” “Oh, cheer up, Davey, you’re a long time dead.”