yeah, I am prejudiced......... I worked for what a burger when I lived in Arizona in 2001, and then did not have access to them, till I moved to arkansas.
they make chocolate shakes that are brown, big squirt of syrup in there, and mixed in right.
get the #5 burger, it has bacon and cheese, add grilled onions, and ask for it on a wheat bun, like the chicken sandwich comes on
add the shake, and those fantastic onion rings, and you have a Mark special