I bought a Big Mac several years ago, from Carey's. It was too heavy to hold in my mouth all the time, and I could never keep it lit. I eventually gave it away.
I have looked at many pictures of Dugout Doug, and the pipe he smoked was nowhere near as massive as the modern cob created in his honor.
I would be curious to find out exactly what pipe he did smoke, though. It might have been a custom-made job.