Fancy Lads Snack Cakes

Fancy Lad Snack Cakes are a food found throughout the wasteland. They are, most likely, cupcakes or sweet pastries.

How they'd still be edible after 200 years of irradiation is a mystery.

Also a reference to the Penny Arcade online comic which did a promotional series of comics for the release of Fallout 3. "Fancy Lads" is the name of the World Of Warcraft guild created and populated by the staff and fans of the comic.