1. A persistent, obsessive sexual desire towards females of North European (and in particular Scottish) descent.
2. An acute, often fatal, infectious febrile disease of northern climates transmitted in every box of Walkers shortbread.
1. I've got a bad case of shortbread fever: I just can't stop thinking about Guinevere's fire bush.
2. I've got a bad case of shortbread fever. I know eating Walkers shortbread gives me gastrointestinal hemorrhaging, but I just can't get enough of this stuff.