LOL, that reminds me of my old field bike I had some years ago. Well I say a bike, it was an old moped. Honda Deluxe Express 50, wow how sad, I can even remember the name.
Anyway the silencer had a puny little pipe on the end, it looked like a pea shooter. I put a huge funnel on the end to make it louder, which didn't really work. The thing was too quiet in the first place to really notice the difference. It was just a funny sight.