the father: I have this rash on my hands. I hope it’s not cirrhosis.
the mother: I think you mean psoriasis, with a ‘p’. Cirrhosis is a liver disease.
the father: I thought they both started with an ‘s’.
the mother: Psoriasis has a silent ‘p’ and cirrhosis starts with a ‘c’. That’s the English language for you.
the son: English is stupid. – With a silent ‘p’!