Vault Boy's Big Book of Laughs for Kids

 is a book mentioned in Fallout 3.

Background
It was made by Vault-Tec, and is mentioned by Knock Knock. One copy was found by Knock Knock inside Little Lamplight. Knock Knock says that the jokes are not very funny. It is not seen ingame. It was probably distributed to all Vaults, except Vaults 55 and 56.

Appearances
is mentioned in Fallout 3.