Inspired by the thread about Pancake Tuesday.
That thread has cracked me up because SO many posters are insisting no one EVER calls pancake Tuesday - it's Pancake Day - and sayu it's weird and wanky to call it that. And then all the Irish people on the thread are like ' wait, we've always called it that and never noticed that no one else did.
So what else you got?
For me, and I'm here 20 years, I only found out about a year ago that no one here calls a birth certificate a 'birth cert'. My English husband thought it was proper weird that I kept saying that. I had never picked up that it wasn't a thing! I think Irish people are so used to talking about the Leaving Cert or Junior Cert etc. that the Cert but feels natural. DH says no.
What other ways have I been unknowingly embarrassing myself for 20 years?