I am lactose tolerant (Northern European descent). Husband is not (Southern European descent) - and every once in a while I forget... made linguini alfredo one night, which is full of cheese, cream and butter - and it sent him to the bathroom for most of the rest of the night.
I’d totally forgotten - and apparently he had too.
We’re still married, BTW.
Of course, it was linguini alfredo. All would naturally be forgiven. :^)
But, didn't the Italians invent Fettuccine Alfredo?