I don't have a problem when they bring it up either. It's when they dismiss my story to highlight theirs.
"Oh, you were in a car accident? That's NOTHING. I was in a REAL car accident where I nearly died."
"Your parents divorced? That's not even a real divorce. They just separated. My dad died. From the car accident."
"Oh, your house was on fire? You call that a fire? PATHETIC. My house was on fire after my mom drove her car into it, setting off a gas explosion, killing my father."
As a kid, back before we had wikis and websites with all the information you want, I thought it was the funniest thing when I gave my Magikarp hyper beam.