Definitions by GCLMB

cat aids 

Noun.

A very unpleasant and undesirable disease; used in comparisons to express the even greater unpleasantness and undesirability of the object to which it is compared.

Simon Amstell (presenter of the BBC show Never Mind the Buzzcocks): "Amy, why don't you do something nice with Katie Melua?"
Amy Winehouse: "I'd rather have cat aids, fank you!"

cat aids by GCLMB June 15, 2007