The Big Friendly GiantThe BFG (short for The Big Friendly Giant) is a 1982 children's book written by Welsh novelist Roald Dahl and illustrated by Quentin Blake. The BFG is a fictional weapon found in many video games, mostly in first-person shooter series such as Doom and Quake. Disney's The BFG comes to theaters July 1, 2016! The talents of three of the world's greatest. Looking for the definition of BFG? Find out what is the full meaning of BFG on Abbreviations. BFG - Frequently Asked Questions. Looking for online definition of BFG or what BFG stands for? BFG is listed.