How do you "build" your favorite sandwich?

You are in a delicatessen shop. The owner allows you to build your favorite sandwich, free of charge. There are all kinds of meats, veggies, boiled eggs and smoked dog biscuits at your disposal. So, what are your choices? I just had a pimento cheese sandwich. It was on a fresh hamburger bun with lettuce and a pinch of horseradish for a zippy taste. Question: are you ready to build your own? Ready, set,......go!