So Brad is always turning down the suggestion to go bowling whenever it is brought up.
Some one "Lets go bowling!"
Brad "NO! I hate bowling. It is not fun."
So I assumed he had some traumatic bowling experience that he didn't want to talk about. Then one day a few weeks ago:
Brad "I want to go bowling sometime with just you."
Me "Why? I thought you hated it?"
B "Actually I have never bowled in my life. I just didn't want to go bowling and then really suck at it."
I felt so bad that he had missed out on bowling. Also now everytime he says he doesn't like doing something, I assume he has just never done it. See: Playing board games.