"Why is she doing that?" Asked Skulduggery as Tanith cartwheeled gracefully over the sofa.
"She has P.O.T.C.S." Ghastly said cooly.
"Excuse me?"
"Pirates Of The Caribbean Syndrome, she watched the new movie today."
You know you've got P.O.T.C.S when you hum the theme tune when you're brushing your teeth.