This is so delicious that I could die.

[Daruma]

Hello.

If you eat something really delicious, do you say, "This is so delicious that I could die"?

Thank you.

[bhaisahab]

Hello.

If you eat something really delicious, do you say, "This is so delicious that I could die"?

Thank you.

I wouldn't say it, but it seems to me that I have heard it.

[Daruma]

so "adjective" that "someone" could die

Does this sound like slang?

[PROESL]

so "adjective" that "someone" could die

Does this sound like slang?

It doesn't sound uneducated, but it wouldn't be everyone's style to use such an expression.

I would call it a kind of hyperbole.

I wouldn't call it slang.

figure (or figure of speech)an expression that departs from the accepted literal sense or from the normal order of words, or in which an emphasis is produced by patterns of sound.

Scroll down to read more: http://www.answers.com/topic/figure