Fancy Lads Snack Cakes are pre-War snack cakes found around the wastes,[Non-game 1] packaged in plain white boxes with red labeling set above a stylized picture of a tied bow in D.C. and Nevada. In the Boston Commonwealth, it is packaged in pink boxes with white borders with each letter on the front superimposed over an image of one of the cupcakes, along with a barcode on the top.
Behind the scenes
The slogan that can be found on the Fancy Lad's Snack Cakes billboard is "A big delight in every bite!" This slogan was also commonly used by Hostess for their Twinkies.
↑Fallout 2d20 Rulebook p.153: "Small, frosted cakes, so laden with sugar and other sweeteners than they’re essentially preserved forever. Proclaimed in advertising to be “America’s Favorite Snackfood”, these cakes can be found across the wastelands, in many teeth-achingly sweet varieties."