Frankenfuels are biofuels excreted by genetically engineered lifeforms. A major research avenue in the green energy sector.
ORIGIN 1990s: from English slang frankenfood, "food derived from genetically modified organisms (GMOs)." Franken(stein) + fuel.
Our corporate overlords patched the genome of brewer's yeast with designer genes for secreting biodiesel. Now it's only a matter a time until you comes down with a frankenfuel-flavored yeast infection!