Bamboo heaven is a place for laughing. Bamboo is a very jolly plant, and they love to laugh. Even after death in bamboo heaven, the bamboo continue to laugh joyfully. Bamboo heaven is truly a place of laughter.
There’s actually a war a goin’ on up in that there bamboo heaven, y’know? Ye might not have heard of it with all that there laughin’ a goin’ on, but there definitely be a war a (わら) goin’ on up in bamboo heaven, y’hear? The bamboo are scared so that’s why they be laughin’ so much. They nervous.