Presumably, alcohol involved.

Oh we love you Mrs Thatcher, like your old man likes a brew;

such a lad your husband Denis when he's had a drink or two.

Sure he'll take a pint of Murphy's and a glass of Irish Mist

and because he sleeps with you each night, no wonder he's always pissed.

Yeah it was a different Mrs Thatcher, and to be clear that might not have been her actual name, I'm just coming up with something that sounds appropriately similar. I've subsequently seen pictures of her in the class yearbook. She was really really hot, when she was my teacher she was younger than I am now so I absolutely did not appreciate her attractiveness.