Rolandbutter - it's all your fault!
I haven't had a big mac for about 20 years, but after reading about your dh, I had to go and get one to see if I could get it all in my mouth.
YOU HAVE GOT TO BE BLOODY JOKING!!!!!!
I could hardly take a bite out of it because of the height - let alone fit the whole thing in. Does your dh have a flip-top head?