I'm sure you've heard this one:
What's an Irishman's idea of foreplay?
"Brace yourself, Mary!"
It's just a joke, and no offense is meant to lovers of the Emerald Isle, of course. And being a joke, I'm sure something like that never really happened.
Here's another one:
Pregnant woman (looking in the mirror at her expanding mid-section): How did this happen?
Her (partially Irish) Husband: Take off your clothes, and I'll show you!
Again, it's just a joke, and people don't really have conversations like that.
Certainly not in this house.