dead meat

English Language Tests, Intermediate level

ESL/EFL Test #331 [color=blue]“English Slang Idioms (52)”, question 1

He knew that once his father found out that he was in detention again at school, he would be dead .

(a) fish
(b) meat
(c) set
(d) head

English Language Tests, Intermediate level

ESL/EFL Test #331 [color=blue]“English Slang Idioms (52)”, answer 1

He knew that once his father found out that he was in detention again at school, he would be dead meat.

Correct answer: (b) meat
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…he would be dead meat, because his father gave him a talking to because his father found out that he was in detention at school.
dead meat =threatening somebody; the expression is usually an exaggeration. Its synonym : You are a dead man.