Well, similar story.
Had some friends who decided that, as they were driving through Arizona, they would cut a cactus (not sure what kind they got) out of the ground and take it home. Yeah, I know it's illegal, at least it was for this particular type.
They had it inside their house for about two weeks when the event happened. It was the middle of the night, when the darn thing starts humming,, buzzing, shaking, generally making a big racket. They stare at the thing for a while, scared for their lives. After a while, they notice all these spiders crawling everywhere. The cactus they had dug out of the ground had a tarantula nest inside it, and the eggs were hatching.