Bad news: There is a spider the size of a human palm...

The good news: ...not here, but in South America.

The bad news: It's poisonous.

Good news: The poison causes a strong erection in men...

The bad news:... which is very painful

Good news: ...but it lasts several hours, even several days.

Bad news: This erection is usually followed by permanent impotence.

Good news: Scientists have isolated the active component from this poison, so they are trying to create a drug for erectile dysfunction, which would be far more effective, harmless and cheaper than Viagra.

Bad news: That spider is on the verge of extinction.