This made me think of a funny story. One time a few weeks back I went to a coffee shop. Whatever I was ordering, I got stuck on pretty bad. The batista gave me a confused stare (not a bad one) so I stopped and I wanted to say "sorry, I had a brain fart." However, when I started saying it, I felt the stutter coming for brain so instead of adjusting my sentence, I skipped over it completely and said "sorry, I had a fart." She actually had such a disturbed look on her face. I just owned up to it because I had to hold in my laughter so bad until I got outside.