At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article.
The Jumbo Dungbomb was a product which could be brought at Zonko's Joke Shop. It was a variant of the original Dungbomb product. It was considered very rare, which was joked about by Bilton Bilmes when he claimed the price for such a product was over one million Galleons.
The product was kept under thirty-seven separate locks in an offactory-controlled environment, since it was a very special variant. In the 1986–1987 school year, there was only one Jumbo Dungbomb in Hogsmeade, which was purchased by Jacob's sibling for pranking Merula Snyde.
- Harry Potter: Hogwarts Mystery (First appearance)