The dumbest thing anyone have said

My dad took me and friend to a restaurant. We talked my friend asked my dad some questions. I was fine til this question…
My friend asked about traveling. She said do you travel? Now all he had to say was yes. He looks at her and said “I climbed Mt. Everest in 7 and hours.” Gets up goes to the bathroom.

I said there is no way. She had no idea how big Everest was, where it was, and how long it takes people to climb. Please.