["One time in high-school band, I didn't know whether or not I was supposed to wear my uniform to an important event.", 'Uh oh!  What happened?  Did you end up wearing it?', "I just didn't go, even though I was one of the best players."]
I bet your audience missed out!
I didn't know whether I was supposed to wear my uniform to a high-school band event, so I just didn't go, even though I was one of the best players.