I didn't understand key signatures or anything, you know....

I didn't understand key signatures or anything, you know. I'd say silly things at the top of a trumpet part like, 'Note, when you play B naturals, make the B naturals a half step lower because they sound funny if they're B naturals.' And some guy said: 'Idiot, just put a flat on the third line and it's a key signature, you know?'