I Got The Blues...The Allergic To Cats Blues, That Is!?

I'm allergic to cats.

Being allergic to cats is difficult. I like the show The Wire on HBO. But HBO also has a show called Cathouse, so now I'm allergic to HBO and can't watch The Wire through the Transitive Property of Allergies, a unique word-based type of allergy that only seems to afflict me and Hates Cats.

What sort of monster would make a house out of cats instead of wood, stucco, and nails anyway?

Answer: Sir Alexander Fleming.