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Charlie:

Now, Drive Shaft's albums must've......spiked when everybody found out that I died in some catastrophic plane disaster. But when I come back? Alive! It's gonna be insane.

Kate:

So you think the raft's gonna work?

Charlie: Of course. Look at that thing. It's not a raft. They built a sodding boat.

from the TV show 'Lost'.

What does 'insane' mean there? Cambridge says it has two meanings: 1 mentally ill 2 INFORMAL extremely unreasonable, but here I think we need a third sense. Emotion: smile What do you think?
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Hi,

The underlying thought is 'When people find out that I'm not dead, they are going to do things that make them seem insane'. It's a slang, hyperbolic way of saying that there will be a huge amount of surprise and excitement.

Clive
Comments  
Thank you Clive. I got it.